PIC16HV785T-I/ML - 8-Bit 20MHz 3.5KB Flash MCU w/ Shunt Regulator | Microchip
MPN: PIC16HV785T-I/ML ✓ فعالPIC16HV785T-I/ML جائزہ
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data RAM, and peripheral set on one die; the PIC16 family uses a 14-bit wide instruction word and Harvard architecture, providing deterministic single-cycle execution for embedded control loops. The PIC16F785 specifically adds analog peripherals - two op-amps, two high-speed comparators, a 12-channel 10-bit ADC, and a two-phase asynchronous feedback PWM - that make it a system-on-chip for closed-loop analog control. The HV prefix denotes the integrated shunt regulator.
Key specifications include 18 digital I/O pins, a wide operating voltage range driven by the internal shunt regulator, an internal 8 MHz oscillator with PLL options, NanoWatt power management for low standby current, on-chip EEPROM emulation, and an enhanced mid-range core with 33 instructions. The 20-QFN (4x4) package measures 4x4 mm with a thermal pad, enabling compact PCB layouts in space-constrained designs.
The on-chip shunt regulator is the architectural differentiator: a typical PIC requires a regulated 2.0-5.5 V supply, but the HV785 can accept an unregulated high-voltage input (up to 15 V) and internally derive the core logic supply through a parallel-pass (shunt) topology, similar to a Zener reference. The two op-amps and comparators can be wired into closed-loop current-mode or voltage-mode control, while the two-phase PWM drives synchronous buck/boost/SEPIC stages. This integration removes external regulator and analog components, reducing BOM cost and PCB area for SMPS and LED driver designs.
Typical applications include LED lighting drivers (constant-current buck/boost), battery chargers (CC/CV topologies), DC-DC converters (buck, boost, SEPIC, flyback), motor control for low-power BLDC fans, and smart power modules. The combination of analog + PWM + high-voltage input suits any closed-loop power-conversion design.
When designing with the PIC16HV785, ensure the shunt regulator has a current-limiting resistor or active pass element rated for the input voltage, since the shunt sinks the difference between input current and MCU current. The op-amp outputs share package pins with comparator inputs - review the pin allocation table in the datasheet carefully. For firmware development, Microchip's MPLAB X IDE with XC8 compiler and PICkit programmers are the standard toolchain.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design considerations not found in the manufacturer datasheet alone - a complete engineering reference for selecting the PIC16HV785T-I/ML for next-generation lighting, charging, and power-conversion designs.
کے لیے ڈراپ اِن متبادل PIC16HV785T-I/ML — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC16HV785T-I/ML (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف ADC, Core Architecture, Package, Maximum CPU Speed, Timers.
PIC16HV785-I/ML
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16HV785T-E/ML
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16HV785-E/ML
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F785-I/ML
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16HV785T-I/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16HV785T-I/ML زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Product Family | PIC16F |
| Core Architecture | 8-bit PIC Mid-Range (14-bit instruction) |
| Maximum Clock Speed | 20 MHz |
| Program Memory | 3.5 KB (2K x 14) Flash |
| Data RAM | 128 bytes |
| I/O Pins | 18 |
| ADC | 10-bit, 12 channels |
| Operational Amplifiers | 2 on-chip |
| Comparators | 2 high-speed |
| PWM Channels | 2-phase asynchronous feedback |
| Internal Shunt Voltage Regulator | Yes (HV suffix) |
| Supply Voltage Range | 2.0 V to 5.5 V (logic); up to 15 V via shunt regulator |
| آپریٹنگ درجہ حرارت | -40C to +85C (Industrial) |
| پیکیج | 20-QFN (4x4 mm) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| MSL لیول | 1 |
| RoHS اسٹیٹس | Compliant |
PIC16HV785T-I/ML پن کنفیگریشن
| پن 1 | RA0/AN0/C1IN+/OP1+ — Port A bit 0 / Analog input 0 / Comparator 1 non-inverting / Op-Amp 1 non-inverting input |
| پن 2 | RA1/AN1/C1IN-/OP1- — Port A bit 1 / Analog input 1 / Comparator 1 inverting / Op-Amp 1 inverting input |
| پن 3 | RA2/AN2/VREF-/OP1OUT — Port A bit 2 / Analog input 2 / Negative reference / Op-Amp 1 output |
| پن 4 | RA3/AN3/VREF+/OP2+ — Port A bit 3 / Analog input 3 / Positive reference / Op-Amp 2 non-inverting input |
| پن 5 | RA4/AN4/C2OUT/OP2- — Port A bit 4 / Analog input 4 / Comparator 2 output / Op-Amp 2 inverting input |
| پن 6 | RA5/AN5/C2IN+/OP2OUT — Port A bit 5 / Analog input 5 / Comparator 2 non-inverting / Op-Amp 2 output |
| پن 7 | RC0/AN6/C2IN- — Port C bit 0 / Analog input 6 / Comparator 2 inverting |
| پن 8 | RC1/AN7 — Port C bit 1 / Analog input 7 |
| پن 9 | RC2/P1A/AN8 — Port C bit 2 / PWM1 output A / Analog input 8 |
| پن 10 | RC3/P1B/AN9 — Port C bit 3 / PWM1 output B / Analog input 9 |
| پن 11 | RC4/P1C/AN10 — Port C bit 4 / PWM1 output C / Analog input 10 |
| پن 12 | RC5/P1D/AN11 — Port C bit 5 / PWM1 output D / Analog input 11 |
| پن 13 | RC6 — Port C bit 6 |
| پن 14 | RC7 — Port C bit 7 |
| پن 15 | RB4 — Port B bit 4 |
| پن 16 | RB5 — Port B bit 5 |
| پن 17 | RB6/ICSPDAT — Port B bit 6 / In-Circuit Serial Programming data |
| پن 18 | RB7/ICSPCLK — Port B bit 7 / In-Circuit Serial Programming clock |
| پن 19 | VDD — Positive logic supply (regulated 2.0-5.5V) |
| پن 20 | VSS — Ground reference |
عام استعمالات
PIC16HV785T-I/ML کے لیے موزوں ہے 6 ایپلیکیشنs: LED Lighting Drivers, Battery Chargers (CC/CV), DC-DC Converters (Buck / Boost / SEPIC), Low-Power Motor Control (BLDC / Fan), Smart Power Modules, Industrial Sensor Signal Conditioning.
LED Lighting Drivers
The PIC16HV785T-I/ML is engineered for high-brightness LED drivers, where its integrated shunt regulator accepts 9-15 V input from an AC/DC adapter without an external LDO. The two-phase PWM module drives a synchronous buck or SEPIC stage at programmable frequency, while the two on-chip op-amps amplify the high-side current-sense signal for closed-loop constant-current regulation. The high-speed comparators perform cycle-by-cycle current limiting, protecting the LED string from inrush and short-circuit faults. With 12 ADC channels, the MCU monitors LED temperature via NTC, ambient light via photodiode, and supply voltage - enabling dimming curves, thermal foldback, and daylight harvesting in a single chip. Compared to discrete solutions, this design saves 30-50% board area.
تجویز کردہ
Battery Chargers (CC/CV)
For single- and multi-cell Li-ion battery chargers, the PIC16HV785T-I/ML implements constant-current / constant-voltage (CC/CV) profiles entirely in firmware. The two on-chip op-amps form the current-sense amplifier (CC loop) and voltage-sense divider buffer (CV loop); the 10-bit ADC reads back pack voltage and current at 100 kS/s for accurate termination detection. The internal shunt regulator accepts a 12 V adapter input directly, removing an external LDO. The two-phase PWM controls a synchronous buck converter driving the battery pack, achieving >92% efficiency at 2 A charge current. Thermal regulation is automatic via NTC input on ADC channel, throttling charge current when cell temperature exceeds safe limits.
تجویز کردہ
DC-DC Converters (Buck / Boost / SEPIC)
The PIC16HV785T-I/ML serves as the controller for non-isolated DC-DC converters in industrial 24 V bus systems. The internal shunt regulator handles 15 V input directly, with the two-phase PWM driving the high-side and synchronous low-side MOSFETs of a buck or SEPIC topology. The two high-speed comparators provide peak-current-mode control with sub-100 ns response time, while the op-amps condition the inductor current-sense signal. The 20 MHz instruction rate closes the voltage loop at 100 kHz switching frequency, achieving better than 1% load regulation. This eliminates the external PWM controller IC, current-sense amplifier, and bias regulator typical of discrete solutions - reducing BOM cost by 25-40%.
تجویز کردہ
Low-Power Motor Control (BLDC / Fan)
Sensorless BLDC fan and pump controllers benefit from the PIC16HV785T-I/ML's on-chip op-amps for back-EMF sensing and comparators for zero-crossing detection. The two-phase PWM (with programmable dead-band) drives a 3-phase inverter at 25 kHz, while the ADC samples the BEMF signal through a resistor divider. The integrated shunt regulator accepts 12-15 V directly from the fan rail, eliminating the external 5 V regulator. With 33 instructions and 5 MIPS, the MCU executes the full sensorless trapezoidal commutation algorithm in under 5 us, leaving headroom for RPM control via PWM duty cycle and fault detection via the comparator.
تجویز کردہ
Smart Power Modules
The PIC16HV785T-I/ML integrates seamlessly into smart power modules combining AC line rectification, isolated DC-DC conversion, and load switching. The HV shunt regulator operates from rectified 12-15 VDC derived from a small transformer winding, eliminating startup circuitry. The two op-amps monitor primary-side current and output voltage, while the comparators implement primary-side regulation (PSR) without an opto-isolator. The 3.5 KB Flash accommodates PSR control loops, fault handling, and communication stacks (UART/I2C for telemetry). With 18 GPIO and 12 ADC channels, the MCU monitors multiple rails simultaneously, providing digital housekeeping for high-reliability industrial systems.
تجویز کردہ
Industrial Sensor Signal Conditioning
Beyond power conversion, the PIC16HV785T-I/ML excels at analog sensor conditioning in industrial environments. The two op-amps provide front-end gain for bridge-type pressure sensors, RTD temperature sensors, or load cells, with the 10-bit ADC digitizing at 100 kS/s for 1% accuracy. The HV shunt regulator tolerates 24 V industrial transients directly, with the MCU's internal ESD clamps providing additional ruggedness. The 20-MHz instruction rate supports digital filtering (moving average, FIR) of the ADC stream, while the 18 GPIO drive alarm LEDs, relays, and 4-20 mA current loops. This combination of analog + digital + HV tolerance in one chip suits PLC analog-input modules and field transmitters.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16HV785T-I/ML — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16HV785-I/ML | PIC16HV785T-E/ML | PIC16HV785-E/ML | PIC16F785-I/ML | PIC16HV785T-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-QFN (4x4 mm) | 20-QFN (4x4) - same | 20-QFN (4x4) - same | 20-QFN (4x4) - same | 20-QFN (4x4) - same | 20-SSOP - different |
| Flash Memory | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Maximum Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Internal Shunt Regulator (HV) | Yes (up to 15 V) | Yes (up to 15 V) | Yes (up to 15 V) | Yes (up to 15 V) | No - external 5V required | Yes (up to 15 V) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +85C | -40C to +85C |
| Packaging Format | Tape & Reel (3300 pcs) | Tube / Tray | Tape & Reel | Tube / Tray | Tube / Tray | Tape & Reel |
| On-chip Op-Amps | 2 | 2 | 2 | 2 | 2 | 2 |
اہم امتیازی خصوصیات
- Integrated HV shunt regulator eliminates external 5V LDO (بمقابلہPIC16F785-I/ML)
- Industrial vs extended temperature grades available in same footprint (بمقابلہPIC16HV785T-E/ML)
- Two-phase PWM with asynchronous feedback enables cycle-by-cycle control (بمقابلہPIC16HV616-I/P (28-pin PDIP))
ڈیزائن نوٹس
The PIC16HV785's integrated shunt regulator requires an external current-limiting resistor between the high-voltage rail (up to 15 V) and the VDD pin. Size the resistor so the shunt sinks the difference between input current and MCU current: R_LIMIT = (V_IN_max - 5.0V) / I_SHUNT_typ. At V_IN=12V and I_SHUNT=10 mA, R_LIMIT is approximately 700 ohm (use 680 ohm standard value). The shunt regulates VDD at 5V nominal; add a 100 nF decoupling capacitor close to VDD and a 10 uF bulk capacitor for transient response.
At 20 MHz switching activity with all peripherals active, the PIC16HV785T-I/ML dissipates approximately 100-150 mW. The 20-QFN (4x4) package has a theta_JA of approximately 35-40 C/W on a standard 4-layer JEDEC test board, yielding a 5-6 C temperature rise above ambient. Estimated: at 85 C ambient, junction reaches 90-91 C - well below the 150 C absolute maximum. For higher ambient temperatures (>100 C), use the PIC16HV785T-E/ML extended-temperature variant instead of industrial grade.
Route the analog inputs (RA0-RA5, RC0-RC1) on a separate analog ground island tied to the QFN thermal pad (VSS) at a single point near the IC. The op-amp outputs (RA3/OP2OUT and RA5/OP1OUT in this pinout) should be guarded by ground traces to avoid coupling from PWM switching nodes (RC2-RC5). Place the VDD decoupling capacitor within 3 mm of pin 19 and the shunt resistor within 5 mm of pin 19. The exposed thermal pad (center pad) MUST be soldered to VSS for proper thermal dissipation and electrical grounding.
Common pitfalls when designing with PIC16HV785T-I/ML: (1) Forgetting that op-amp output pins are shared with port functions and comparator inputs - review the pin allocation table before PCB layout; (2) Configuring the shunt regulator without adequate heat dissipation in the current-limit resistor (use 0805 or larger size at >5 mA shunt); (3) Using the internal 8 MHz oscillator without calibrating for voltage/temperature drift in precision timing applications; (4) Forgetting that the ADC reference voltage defaults to VDD - for high-accuracy conversions, use an external VREF+ on RA3; (5) Enabling PWM without first configuring the comparator trip points, leading to MOSFET shoot-through.
تعمیل کی معلومات
RoHS compliant per Microchip product page. Not AEC-Q100 qualified (industrial grade only). For automotive applications, Microchip recommends the PIC16F1779 or PIC16F18855 families which carry AEC-Q100 Grade 1 qualification.
