The TPS7A8101 low-dropout linear regulator (LDO) offers very good performance in noise and power-supply rejection ratio (PSRR) at the output. This LDO uses an advanced BiCMOS process and a PMOSFET pass device to achieve very low noise, excellent transient response, and excellent PSRR performance.
The TPS7A8101 device is stable with a 4.7-μF ceramic output capacitor, and uses a precision voltage reference and feedback loop to achieve a worst-case accuracy of 3% over all load, line, process, and temperature variations.
This device is fully specified over the temperature range of TJ = –40°C to 125°C and is offered in a 3-mm × 3-mm, SON-8 package with a thermal pad.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS7A8101 | SON (8) | 3.00 mm × 3.00 mm |
Changes from A Revision (April 2012) to B Revision
Changes from * Revision (December 2011) to A Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
EN | 5 | I | Driving this pin high turns on the regulator. Driving this pin low puts the regulator into shutdown mode. Refer to the Shutdown section for more details. EN must not be left floating and can be connected to IN if not used. |
FB | 3 | I | This pin is the input to the control-loop error amplifier and is used to set the output voltage of the device. |
GND | 4, pad | — | Ground |
IN | 7 | I | Unregulated input supply |
8 | |||
NR | 6 | — | Connect an external capacitor between this pin and ground to reduce output noise to very low levels. The capacitor also slows down the VOUT ramp (RC softstart). |
OUT | 1 | O | Regulator output. A 4.7-μF or larger capacitor of any type is required for stability. |
2 |