TPS79118-Q1 Datasheet, PDF (5/21 Pages) Texas Instruments – ULTRALOW NOISE,HIGH PSRR,FAST RF 100MA LOW-DROPOUT LINEAR REGULATORS

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TPS79101ĆQ1, TPS79118ĆQ1
TPS79133ĆQ1, TPS79147ĆQ1
SGLS160B − APRIL 2003 − REVISED SEPTEMBER 2008
FUNCTIONAL BLOCK DIAGRAM—ADJUSTABLE VERSION
VIN
GND
EN
UVLO
Current
Sense
ILIM
_
SHUTDOWN
+
UVLO
VOUT
R1
FB
R2
Thermal
Shutdown
Bandgap
VIN
Reference
250 kΩ
Vref
External to
the Device
Bypass
FUNCTIONAL BLOCK DIAGRAM—FIXED VERSION
VIN
GND
EN
UVLO
Thermal
Shutdown
Current
Sense
ILIM
SHUTDOWN
_+
R1
UVLO
R2
VOUT
VIN
Bandgap
Reference
250 kΩ
Vref
Bypass
Terminal Functions
TERMINAL
NAME
I/O
ADJ FIXED
DESCRIPTION
BYPASS
4
4
An external bypass capacitor, connected to this terminal, in conjunction with an internal resistor, creates
a low-pass filter to further reduce regulator noise.
EN
3
3
I The EN terminal is an input which enables or shuts down the device. When EN is a logic high, the device
will be in shutdown mode. When EN is a logic low, the device will be enabled.
FB
5
N/A I This terminal is the feedback input voltage for the adjustable device.
GND
2
2
Regulator ground
IN
1
1
I The IN terminal is the input to the device.
OUT
6
5
O The OUT terminal is the regulated output of the device.
5