TPS737xx-Q1 线性低压降 (LDO) 稳压器系列在电压跟随器配置中使用了 NMOS 旁路元件。该拓扑结构对输出电容值和等效串联电阻 (ESR) 的敏感度相对较低,从而实现多种负载配置。即使使用 1µF 的小型陶瓷输出电容器,也能实现出色的负载瞬态响应。NMOS 拓扑结构也可实现极低压降。
TPS737xx-Q1 系列利用先进的 BiCMOS 工艺实现高精度,同时提供极低的压降和低接地引脚电流。未启用时的电流消耗低于 20nA,适用于便携式 应用。这些器件受到热关断和折返电流限制的保护。
器件型号 | 封装 | 封装尺寸(标称值) |
---|---|---|
TPS737-Q1 | VSON (8) | 3.00mm × 3.00mm |
Changes from A Revision (July 2016) to B Revision
Changes from * Revision (December 2008) to A Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
EN | 5 | I | Driving the enable pin (EN) high turns on the regulator. Driving this pin low puts the regulator into shutdown mode. See Enable Pin and Shutdown for more details. EN must not be left floating and can be connected to IN if not used. |
FB | 3 | I | Adjustable voltage version only. This is the input to the control loop error amplifier, and it is used to set the output voltage of the device. |
GND | 4, Pad | G | Ground |
IN | 8 | I | Unregulated input supply |
NR | 3 | — | Fixed voltage versions only. Connecting an external capacitor to this pin bypasses noise generated by the internal bandgap, reducing output noise to very low levels. |
OUT | 1 | O | Regulator output. A 1-µF or larger capacitor of any type is required for stability. |
NC | 2, 6, 7 | — | No internal connection |
MIN | MAX | UNIT | ||
---|---|---|---|---|
Input supply voltage | –0.3 | 6 | V | |
Enable voltage | –0.3 | 6 | V | |
Output voltage | –0.3 | 5.5 | V | |
Input voltage | NR or FB pin | –0.3 | 6 | V |
Peak output current | Internally limited | |||
Output short-circuit duration | Indefinite | |||
Junction temperature range, TJ | –55 | 150 | °C | |
Storage temperature, 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 | MAX | UNIT | ||
---|---|---|---|---|
VIN | Input supply voltage | 2.2 | 5.5 | V |
IOUT | Output current | 0 | 1 | A |
TJ | Operating junction temperature | –40 | 125 | °C |
THERMAL METRIC(1) | TPS737xx-Q1 | UNIT | |
---|---|---|---|
DRB (VSON) | |||
8 PINS | |||
RθJA | Junction-to-ambient thermal resistance | 52.2 | °C/W |
RθJC(top) | Junction-to-case (top) thermal resistance | 59.4 | °C/W |
RθJB | Junction-to-board thermal resistance | 19.3 | °C/W |
ψJT | Junction-to-top characterization parameter | 2 | °C/W |
ψJB | Junction-to-board characterization parameter | 19.3 | °C/W |
RθJC(bot) | Junction-to-case (bottom) thermal resistance | 11.8 | °C/W |