MIC47100YML-TR - 1A Low-VIN LDO Regulator | Microchip | 8-MLF
N.º de pieza: MIC47100YML-TR ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $1.85 | $1,85 |
| 10 | $1.62 | $16,20 |
| 100 | $1.28 | $128,00 |
| 500 | $1.05 | $525,00 |
| 1.000 | $0.89 | $890,00 |
| 5.000 | $0.74 | $3.700,00 |
MIC47100YML-TR Descripción general
An LDO (low-dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is very close to the output voltage. LDOs sit within the broader hierarchy of linear regulators, themselves a sub-family of voltage regulators and ultimately part of the power management IC (PMIC) category. Because they burn the excess VIN−VOUT as heat, LDOs add no switching noise to the rail - making them the default choice for point-of-load supplies that follow a switching pre-regulator.
Key features of the MIC47100 include an adjustable output range from 0.8V to 2V (the YML variant) plus fixed-voltage members, an ultra-low 80 mV typical dropout at full 1A load, and stability with only a 1 µF ceramic output capacitor - eliminating the bulky tantalum or electrolytic capacitors required by older LDOs. The part also integrates a single active-high enable pin for sequenced power-up and a "zero off-mode-current" shutdown state, allowing downstream battery savings in portable systems.
Architecturally, the MIC47100 uses a high-bandwidth pass element and a precision bandgap reference to deliver fast transient response to load steps, which is critical for powering modern FPGAs, ASICs, and high-speed digital logic. The wide VIN range (down to 1V) lets the part regulate point-of-load rails directly from a 1.2V or 1.5V intermediate bus, removing an extra regulator stage.
Typical applications include FPGA/ASIC core and I/O voltage rails in networking switches, DDR memory termination supplies, portable/handheld point-of-load regulation, industrial single-board computers, and any board that needs a clean, low-noise 1A rail generated from an existing low-voltage bus.
When designing with the MIC47100YML-TR, keep input-to-output headroom below 3.6V and place the 1 µF ceramic input/output capacitors as close to the IC as possible. The exposed pad must be soldered to a sufficient ground copper pour to keep junction temperature within the -40 °C to +125 °C operating range.
This page synthesizes distributor pricing, same-brand and cross-brand alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers an actionable reference for selecting the MIC47100YML-TR.
Alternativas directas para MIC47100YML-TR — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con MIC47100YML-TR (mismo factor de forma y huella) — difiere en Input Voltage Range, Maximum Output Current, Output Voltage Range, Package, Topology.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MIC47100-1.0YML-TR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MIC47100-1.2YML-TR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MIC47100-1.5YML-TR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MIC47100YMME-TR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MIC47100-1.8YMME-TR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MIC23303YML-T5
✅ Sustitución directa✓ En stock
$1.84 / unidad
Ver hoja de datos →MIC47100YML-TR Valores máximos y características eléctricas
| Manufacturer | Microchip Technology |
| Product Type | LDO Linear Voltage Regulator |
| Topología | Positive, single-output, low-dropout |
| Configuración de salida | Adjustable |
| Rango de tensión de salida | 0.8 V to 2 V |
| Rango de tensión de entrada | 1 V to 3.6 V |
| Corriente de salida máxima | 1 A |
| Dropout Voltage (typical) | 80 mV at 1 A |
| Output Accuracy | ±2% |
| Line Regulation | 0 % |
| Load Regulation | 0 % |
| Output Capacitor | 1 µF ceramic (stable) |
| Patilla de habilitación | Active-high |
| Corriente de apagado | "Zero" off-mode-current |
| Encapsulado | 8-MLF® (2 mm × 2 mm DFN-EP) |
| Tipo de montaje | Surface Mount |
| Temperatura de funcionamiento | -40 °C to +125 °C |
| Estado RoHS | Compliant |
| Lead Free | Yes |
Configuración de pines de MIC47100YML-TR
| Pin 1 | EN — Enable (active-high); drive low for shutdown |
| Pin 2 | VIN — Input supply voltage (1 V to 3.6 V) |
| Pin 3 | GND — Ground |
| Pin 4 | ADJ — Adjustable feedback node; connect to resistor divider |
| Pin 5 | VOUT — Regulated output voltage |
| Pin 6 | NC — Not connected (per datasheet) |
| Pin 7 | NC — Not connected (per datasheet) |
| Pin 8 | EP — Exposed thermal pad - must be soldered to GND plane |
Aplicaciones típicas
MIC47100YML-TR es adecuado para 6 aplicacións: FPGA/ASIC Core Voltage Rails, DDR Memory Termination Supply (VTT), Portable / Handheld Point-of-Load Regulation, Networking Switch Line-Card Logic Rails, Industrial Single-Board Computer (SBC) Supplies, Test & Measurement Point-of-Load Reference Rails.
FPGA/ASIC Core Voltage Rails
The MIC47100YML-TR is purpose-built for low-voltage, high-current point-of-load regulation directly from a 1.5 V or 3.3 V intermediate bus, making it an ideal supply for FPGA and ASIC core rails (0.85 V, 0.9 V, 1.0 V, 1.2 V, 1.5 V, 1.8 V). Its 80 mV dropout at 1 A and 1 µF ceramic-only output stability eliminate the need for bulk tantalum capacitors, allowing dense PCB layouts next to modern low-power FPGAs. Unlike switching regulators, the MIC47100 adds no high-frequency ripple to the rail, which is critical when the downstream load includes sensitive PLLs, transceivers, or high-speed SERDES blocks.
Recomendado
DDR Memory Termination Supply (VTT)
The MIC47100YML-TR's adjustable 0.8-2 V output and 1 A capability match the requirements of DDR/DDR2/DDR3 termination (VTT) rails that must source and sink current while tracking VDDQ/2. With 80 mV dropout at 1 A and 1 µF ceramic-only stability, the regulator delivers a low-impedance point-of-load supply with no switching noise that could couple into the high-speed memory bus. Designers typically feed the MIC47100 from a 1.5 V or 1.8 V intermediate bus generated by a switching pre-regulator, then use the LDO to clean up the final VTT rail for memory integrity.
Recomendado
Portable / Handheld Point-of-Load Regulation
The MIC47100YML-TR's "zero off-mode-current" shutdown state via its active-high enable pin makes it a strong fit for battery-powered handheld devices that must drop quiescent draw to zero in sleep mode. With 1.0-3.6 V VIN tolerance, it can regulate directly from a single-cell Li-ion (3.0-4.2 V) after a step-down pre-regulator, or from a 1.5 V alkaline stack without an intermediate stage. The 2 mm × 2 mm 8-MLF® footprint minimizes PCB area in space-constrained wearables, handhelds, and IoT endpoints where every square millimeter of board space matters.
Recomendado
Networking Switch Line-Card Logic Rails
The MIC47100YML-TR's 1 A output and 80 mV dropout suit it for generating 0.9 V or 1.0 V logic rails for switch ASICs, retimers, and PHY interfaces on networking line cards. The 1.0-3.6 V VIN range accepts the standard 1.5 V or 3.3 V intermediate bus that already exists on most telecom/datacom boards, eliminating an extra regulator stage and reducing BOM count. Because the LDO adds no switching noise, it preserves signal integrity on multi-gigabit SERDES lanes where even a few mV of ripple would degrade eye-diagram margins.
Recomendado
Industrial Single-Board Computer (SBC) Supplies
The MIC47100YML-TR's -40 °C to +125 °C operating range and 8-MLF® 2 × 2 mm footprint make it suitable for industrial SBCs that need clean, low-voltage rails in compact form factors. With stability from a single 1 µF ceramic, it removes the bulk output capacitors that would otherwise dominate board real estate. Designers commonly use the MIC47100 as a post-regulator following a wide-VIN buck converter to deliver a clean 1.0 V or 1.2 V rail to a microcontroller, FPGA, or SoC without injecting switching ripple into analog or mixed-signal sections.
Recomendado
Test & Measurement Point-of-Load Reference Rails
The MIC47100YML-TR's low-noise LDO topology (no switching ripple) and 0.8-2 V adjustable output suit it as a clean point-of-load reference for ADC reference buffers, DAC reference pins, and analog front-end (AFE) sections in bench-top instruments. With 1 A capability, a single MIC47100 can power an entire small AFE board including op-amps, reference buffers, and bias networks. The 1 µF ceramic-only stability avoids the leakage and dielectric absorption that would otherwise degrade instrument accuracy through tantalum or electrolytic capacitors.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MIC47100YML-TR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MIC47100-1.0YML-TR | MIC47100-1.2YML-TR | MIC47100-1.5YML-TR | MIC47100YMME-TR | MIC47100-1.8YMME-TR | MIC23303YML-T5 |
|---|---|---|---|---|---|---|---|
| Package | 8-MLF® (2x2 mm DFN-EP) | 8-MLF® (2x2 mm DFN-EP) - same | 8-MLF® (2x2 mm DFN-EP) - same | 8-MLF® (2x2 mm DFN-EP) - same | 8-MSOP-EP (3x3 mm) | 8-MSOP-EP (3x3 mm) | 10-MLF® (2x2 mm) |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Output Type | Adjustable (0.8 V to 2 V) | Fixed 1.0 V | Fixed 1.2 V | Fixed 1.5 V | Adjustable (0.8 V to 2 V) | Fixed 1.8 V | Adjustable |
| Maximum Output Current | 1 A | 1 A - same | 1 A - same | 1 A - same | 1 A - same | 1 A - same | 3 A (+200%) |
| Input Voltage Range | 1 V to 3.6 V | 1 V to 3.6 V - same | 1 V to 3.6 V - same | 1 V to 3.6 V - same | 1 V to 3.6 V - same | 1 V to 3.6 V - same | 2.25 V to 5.5 V (higher) |
| Enable Pin | Yes (active-high, zero Iq off) | Yes - same | Yes - same | Yes - same | Yes - same | Yes - same | Yes |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +125 °C - same | -40 °C to +125 °C - same | -40 °C to +125 °C - same | -40 °C to +125 °C - same | -40 °C to +125 °C - same | -40 °C to +125 °C - same |
Diferenciadores clave
- Lowest-VIN LDO at 1.0 V input ceiling for direct 1.5 V/3.3 V bus regulation (frente a MIC23303YML-T5)
- Smallest-footprint 1 A LDO in the MIC47100 family (frente a MIC47100YMME-TR)
- Adjustable output across 0.8-2 V in a single footprint (frente a MIC47100-1.0YML-TR / -1.2YML-TR / -1.5YML-TR fixed variants)
Notas de diseño
Estimated: at VIN = 3.3 V, VOUT = 1.0 V, and 1 A load, the MIC47100YML-TR dissipates roughly (3.3-1.0) × 1 = 2.3 W. With a 2 mm × 2 mm 8-MLF® package and θJA around 90 °C/W on a 1 oz copper 1-square-inch pad, junction temperature would rise ~207 °C above ambient - far above the 125 °C limit. For sustained 1 A operation, solder the exposed pad (pin 8) to a generous GND copper pour (≥ 0.5 in²) and consider adding thermal vias to inner planes to keep Tj ≤ 125 °C.
Place the 1 µF ceramic input and output capacitors within 2 mm of their respective pins to minimize parasitic inductance. Use X5R or X7R dielectric 0402/0603 ceramics (≥ 4.7 µF recommended for VIN transients). Route the ADJ feedback trace away from noisy switching nodes - for the adjustable YML variant use a Kelvin connection directly at the output capacitor pad to preserve ±2% accuracy.
Do not exceed 3.6 V on VIN - the MIC47100 is a low-VIN LDO and will be damaged above its absolute-maximum rating. The enable pin is active-high; leaving it floating defaults the part ON in some board configurations, so tie EN through a 100 kΩ resistor to a known logic level if sequencing matters. For the adjustable variant, choose ADJ resistors of ≤ 100 kΩ to minimize the impact of ADJ pin bias current on output accuracy.
Información de cumplimiento
RoHS compliant and lead-free per distributor listings (DigiKey, Mouser) as of 2026-10-09. AEC-Q100 automotive qualification not specified - not recommended for safety-critical automotive applications without further qualification.
