TPS7A1601DGNR - 60V 100mA Ultra-Low IQ LDO | Texas Instruments
料号： TPS7A1601DGNR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.95 | $1.95 |
| 10 | $1.75 | $17.50 |
| 100 | $1.42 | $142.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $0.98 | $980.00 |
TPS7A1601DGNR 概述
An LDO (low-dropout) linear regulator is a voltage regulator that maintains a stable output even when input and output voltages are close, using a pass transistor in its linear region. LDOs are a subclass of linear regulators within the broader power management IC family, valued for low output noise and simplicity. The TPS7A1601 belongs to this category, optimized for ultra-low standby power in always-on systems.
Key features include a typical quiescent current of only 5 uA, dramatically extending battery life in continuous or sporadic (power backup) applications. The device integrates a CMOS-logic-compatible enable pin and an open-drain active-high power-good (PG) output with user-programmable delay for power-rail sequencing. Dropout voltage is typically 300 mV at 100 mA load, and the part includes overcurrent and thermal shutdown protection.
The CMOS architecture pairs a precision 1.2 V bandgap reference and error amplifier with a P-channel MOSFET pass element, achieving low IQ without sacrificing transient response. The device is stable with ceramic output capacitors as small as 2.2 uF, simplifying the BOM. The open-drain PG output can be pulled up to any rail up to 60 V, enabling flexible level-shifting.
Typical applications include battery-powered industrial sensors, automotive body control modules, and always-on microcontroller power supplies. The 60 V rating allows direct connection to 12 V and 24 V industrial buses with full tolerance for load-dump transients, eliminating a pre-regulator stage.
Design consideration: at high input-to-output differentials, dissipation is significant (e.g., 24 V to 3.3 V at 100 mA is about 2.1 W), so PCB copper area under the exposed pad must be sized for thermal performance, and the programmable PG delay should be set to match MCU reset requirements.
直接替换替代料： TPS7A1601DGNR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： TPS7A1601DGNR （相同外形与封装尺寸） ——差异在于 Input Voltage Range, Package, Power Good Output, Protection Features.
快速对比工具——选择替代料号进行并排对比：
TPS7A1601QDGNRQ1
✅ 直接替换✓ 有现货
$1.66 / 个
查看数据手册 →TPS7A1600DGNR
⚡ 相同封装 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TPS7A1633QDGNRQ1
⚡ 相同封装📋 参考替代料（不在目录中）
TPS7A4901DGNR
⚡ 相同封装📋 参考替代料（不在目录中）
LT3014BEDD
⚡ 相同封装 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TPS7A1601DGNR 最大额定值与电气特性
| 输出类型 | Adjustable |
| 输出电压范围 | 1.2 V to 18.5 V |
| 最大输出电流 | 100 mA |
| 输入电压范围 | 3 V to 60 V |
| 静态电流 | 5 uA (typical) |
| 压差电压 | 300 mV at 100 mA (typical) |
| 基准电压 | 1.2 V |
| 使能引脚 | Yes (CMOS-logic compatible) |
| 电源正常输出 | Open-drain active-high PG with programmable delay |
| Protection Features | Overcurrent, thermal shutdown |
| Output Capacitor | Stable with 2.2 uF ceramic minimum |
| 封装 | 8-HVSSOP (DGN) with exposed pad |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant (per distributor listing) |
TPS7A1601DGNR 引脚配置
| 引脚 1 | IN — Input supply, 3 V to 60 V |
| 引脚 2 | EN — Enable input, CMOS-logic compatible |
| 引脚 3 | GND — Ground |
| 引脚 4 | FB — Feedback input for adjustable output |
| 引脚 5 | DELAY — Power-good delay programming pin |
| 引脚 6 | PG — Power good, open-drain active-high output |
| 引脚 8 | OUT — Regulated output voltage, 1.2 V to 18.5 V |
| 引脚 PAD | Exposed Pad — Ground connection and thermal dissipation |
典型应用
TPS7A1601DGNR 适用于 6 应用s: Battery-Powered Industrial Sensors, Automotive Body Control Modules, 24 V Industrial Bus Post-Regulator, Always-On Microcontroller Supplies, Power Backup and Sporadic-Load Systems, Metering and Smart Grid Nodes.
Battery-Powered Industrial Sensors
The TPS7A1601DGNR fits battery-powered industrial sensors because its 5 uA typical quiescent current preserves battery capacity over multi-year deployments, while the 60 V input tolerance handles solar-charged or 24 V bus supplies directly. Placed between the battery rail and the sensor analog front end with a 2.2 uF ceramic output capacitor, it provides a clean regulated rail with overcurrent and thermal shutdown protection. The enable pin allows the system MCU to disconnect the rail entirely during sleep, and the power-good output confirms regulation before waking the sensor chain.
推荐
Automotive Body Control Modules
In automotive body control modules, the AEC-Q100 qualified TPS7A1601QDGNRQ1 variant provides an always-on standby rail that survives 60 V load-dump transients on 12 V battery systems. The 5 uA quiescent draw keeps key-off battery drain minimal, directly affecting cold-cranking reserve. The CMOS-compatible enable connects to ignition-sense logic, while the open-drain power-good output with programmable delay sequences the MCU reset. Use the same HVSSOP-8 (DGN) footprint as the standard DGNR part to unify PCB layout across consumer and automotive builds.
推荐
24 V Industrial Bus Post-Regulator
The 60 V input rating lets the TPS7A1601DGNR connect directly to 24 V industrial control buses, including tolerance for surge transients, eliminating a pre-regulator stage that an ordinary 35 V LDO would require. Supplying up to 100 mA to PLC I/O, isolation-side rails, or interface transceivers, the device pairs well with a buck converter downstream at higher loads. Designers must budget thermal margin: 24 V to 5 V at 100 mA dissipates about 1.9 W, so generous copper pour under the exposed pad is essential for reliable junction temperatures.
推荐
Always-On Microcontroller Supplies
For always-on MCU domains in smart meters and IoT nodes, the TPS7A1601DGNR provides a regulated 1.8 V to 3.3 V rail from a wide input, drawing only 5 uA itself. The programmable power-good delay can be matched to the MCU reset requirement, ensuring the processor boots only after the rail is stable. Its 2.2 uF ceramic-output stability reduces board area and BOM cost. In sporadic-operation designs, the enable pin gates the entire domain, and the 60 V tolerance supports energy-harvest or rectified-AC inputs without additional protection.
推荐
Power Backup and Sporadic-Load Systems
The TPS7A16 family is explicitly designed by TI for continuous or sporadic (power backup) battery applications where ultra-low quiescent current extends system life. In backup circuits feeding RTC, metering, or alarm circuitry, the 5 uA IQ means the regulator itself consumes negligible standby energy compared to the load. The wide 3 V to 60 V input accommodates battery stacks, supercapacitor banks, and rectified AC. The open-drain PG output pulls up to any rail up to 60 V, giving flexible logic-level signaling to backup controllers regardless of the supervisory supply voltage.
推荐
Metering and Smart Grid Nodes
Electricity meter and smart-grid node designs benefit from the TPS7A1601DGNR because it tolerates rectified mains-derived DC inputs up to 60 V while drawing microamp-level quiescent current, preserving battery-backed accuracy circuits during outages. The device powers MCU and metrology analog rails at up to 100 mA with low output noise for the ADC front end. Pair it with an isolated interface such as ISO1050 for communication. Designers should implement the programmable PG delay to hold the MCU in reset until the metrology rail settles after power recovery.
推荐
推荐产品汇总
工程参考数据： TPS7A1601DGNR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TPS7A1601QDGNRQ1 | TPS7A1633QDGNRQ1 | TPS7A4901DGNR |
|---|---|---|---|---|
| Package | 8-HVSSOP (DGN) | 8-HVSSOP (DGN) - same | 8-HVSSOP (DGN) - same | 8-HVSSOP (DGN) - center pad differs, verify footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Current | 100 mA | 100 mA | 100 mA | 1 A |
| Output Voltage | Adjustable 1.2 V to 18.5 V | Adjustable 1.2 V to 18.5 V | Fixed 3.3 V | Adjustable (1.2 V class) |
| Automotive Grade (AEC-Q100) | No (standard grade) | Yes | Yes | No |
| Noise / Positioning | Ultra-low IQ, battery life focused | Ultra-low IQ, identical | Ultra-low IQ, fixed rail | Ultra-low noise, high current |
关键差异点
- Industry-low 5 uA quiescent current （对比 TPS7A4901DGNR)
- 60 V input tolerance （对比 TPS7A4901DGNR)
- Automotive drop-in upgrade path （对比 TPS7A1601QDGNRQ1)
设计说明
At 24 V input, 3.3 V output, and 100 mA load, the TPS7A1601DGNR dissipates about 2.1 W. Bond the HVSSOP-8 exposed pad to a generous ground copper area (at least 1 square inch with thermal vias) per TI datasheet thermal layout guidance. At lighter loads, dissipation scales linearly, but always compute worst-case continuous dissipation against the package theta-JA before finalizing the layout.
Place a 2.2 uF or larger ceramic output capacitor within a few millimeters of the OUT pin and an input capacitor close to IN. Connect the exposed pad directly to the ground plane with an array of vias for both electrical return and heat spreading. Route the FB divider with short traces away from the PG and switching-node nets to preserve output accuracy.
Never exceed the 60 V absolute maximum input, including transients - the 60 V rating is the family's key advantage, but surges above it will damage the device. Do not omit the DELAY capacitor if PG timing matters; the programmable delay must be matched to the MCU reset requirement. The PG output is open-drain, so it needs an external pull-up that may be to any rail up to 60 V.
合规信息
RoHS compliant per distributor listing for standard DGNR. AEC-Q100 qualification applies to the TPS7A1601QDGNRQ1 variant, not this standard part.
