TPS785-Q1 超低压降稳压器 (LDO) 是一款小型低静态电流 LDO,可提供 1A 电流,具有出色的线路和负载瞬态性能。
凭借低输出噪声和出色的 PSRR 性能,此器件适用于功耗敏感型模拟负载。TPS785-Q1 具有 1.7V 至 6.0V 的输入电压范围和 1.2V 至 5.5V 的可调节输出电压范围,是一款灵活的后置稳压器件。它还提供 0.65V 至 5.0V 的固定输出电压,为常用电压轨供电。
TPS785-Q1 具有折返电流限制,可在过流条件下降低功率耗散。EN 端输入有助于满足该系统的电源时序要求。内部软启动通过控制启动过程来降低浪涌电流,从而减小使用的输入电容。
TPS785-Q1 提供了有源下拉电路,当被禁用时可以使输出负载快速放电。
器件型号 | 封装 | 封装尺寸(标称值) |
---|---|---|
TPS785-Q1 | 可湿性侧面 VSON (8) | 3.00mm × 3.00mm |
TO-252 (5) | 6.10mm × 6.60mm |
Changes from May 7, 2021 to January 11, 2022 (from Revision A (April 2021) to Revision B (January 2022))
PIN | I/O | DESCRIPTION | ||||||
---|---|---|---|---|---|---|---|---|
NAME | DRB (Fixed) | DRB (Adjustable) | DRB (Fixed) B Version | DRB (Adjustable) B Version | KVU (Fixed) | KVU (Adjustable) | ||
EN | 7 | 7 | 6 | 6 | 1 | 1 | Input | Enable pin. Driving this pin to logic high enables the device; driving this pin to logic low disables the device. Do not float this pin. If not used, connect EN to IN. |
FB | — | 2 | — | 2 | — | 5 | Input | Feedback pin. Input to the control-loop error amplifier. This pin is used to set the output voltage of the device with the use of external resistors. Do not float this pin. For adjustable-voltage version devices only. |
GND | 5 | 5 | 5 | 5 | 3 | 3 | — | Ground pin. This pin must be connected to ground on the board. |
IN | 8 | 8 | 8 | 8 | 2 | 2 | Input | Input pin. For best performance, place the nominal recommended value or larger ceramic capacitor from IN to GND; see the Recommended Operating Conditions table. Place the input capacitor as close to the input of the device as possible. |
NC | 2, 3, 4, 6 | 3, 4, 6 | 2, 3, 4, 7 | 3, 4, 7 | 5 | — | — | No connect pin. This pin is not internally connected. Connect to ground for best thermal performance or leave floating. |
OUT | 1 | 1 | 1 | 1 | 4 | 4 | Output | A 0.47-µF or greater effective capacitance is required from OUT to ground for stability. For best transient response, use a 1-µF or larger ceramic capacitor from OUT to ground. Place the output capacitor as close to output of the device as possible; see the Recommended Operating Conditions table. |
Thermal Pad | Pad | Pad | Pad | Pad | Pad | Pad | — | The thermal pad is electrically connected to the GND pin. Connect the thermal pad to a large-area GND plane for improved thermal performance. |
MIN | MAX | UNIT | ||
---|---|---|---|---|
Voltage | Supply, VIN | –0.3 | 6.5 | V |
Enable, VEN | –0.3 | 6.5 | V | |
Output, VOUT | –0.3 | VIN + 0.3(2) | V | |
Feedback, VFB | –0.3 | 2 | V | |
Current | Output, IOUT | Internally limited | ||
Temperature | Operating junction, TJ | –40 | 150 | °C |
Storage, Tstg | –65 | 150 | °C |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human-body model (HBM), per AEC Q100-002(1) | ±2000 | V |
Charged-device model (CDM), per AEC Q100-011 | ±500 |
MIN | NOM | MAX | UNIT | |||
---|---|---|---|---|---|---|
VIN | Input voltage | 1.7 | 6.0 | V | ||
VOUT | Output voltage | Adjustable output | 1.2 | 5.5 | V | |
Fixed output | 0.65 | 5.0 | ||||
CIN | Input capacitor | 0.1 | 1 | µF | ||
COUT | Output capacitor | 1(1) | 200 | µF | ||
CFF | Feed-forward capacitor(2) | 0 | 10 | 100 | nF | |
IOUT | Output current | 0 | 1 | A | ||
COUT,ESR | Output capacitor ESR | 0.001 | 1 | Ω | ||
VEN | Enable voltage | 0 | 6 | V | ||
FEN | Enable toggle frequency | 10 | kHz | |||
TJ | Junction temperature | –40 | 150 | °C |