Datasheet

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(1) See application information section for capacitor selection details.
PG
OUT
2
1
IN
EN
GND
3
5
4
V
I
PG
V
O
47 µF
+
C
o
(1)
1 µF
TPS75901, TPS75915
TPS75918, TPS75925, TPS75933
SLVS318E – DECEMBER 2000 – REVISED MARCH 2004
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 400 mV at
an output current of 7.5 A for the TPS75933) and is directly proportional to the output current. Additionally, since
the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output
loading (typically 125 µA over the full range of output current, 1 mA to 7.5 A). These two key specifications yield
a significant improvement in operating life for battery-powered systems.
The device is enabled when EN is connected to a low-level voltage. This LDO family also features a sleep mode;
applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescent current to less than
1 µA at T
J
= 25°C. The power-good terminal (PG) is an active low, open drain output, which can be used to
implement a power-on reset or a low-battery indicator.
The TPS759xx is offered in 1.5-V, 1.8-V, 2.5-V, and 3.3-V fixed-voltage versions and in an adjustable version
(programmable over the range of 1.22 V to 5 V). Output voltage tolerance is specified as a maximum of 3% over
line, load, and temperature ranges. The TPS759xx family is available in a 5-pin TO-220 (KC) and TO-263 (KTT)
packages.
AVAILABLE OPTIONS
OUTPUT VOLTAGE TO-220 TO-263
T
J
(TYP) (KC) (KTT)
(1)
3.3 V TPS75933KC TPS75933KTT
2.5 V TPS75925KC TPS75925KTT
-40°C to 125°C 1.8 V TPS75918KC TPS75918KTT
1.5 V TPS75915KC TPS75915KTT
Adjustable 1.22 V to 5 V TPS75901KC TPS75901KTT
(1) The TPS75901 is programmable using an external resistor divider (see application information). Add T for KTT devices in 50-piece reel.
Add R for KTT devices in 500-piece reel.
Figure 1. Typical Application Configuration (For Fixed Output Options)
Terminal Functions (TPS759xx)
TERMINAL
I/O DESCRIPTION
NAME NO.
EN 1 I Enable input
FB/PG 5 I/O Feedback input voltage for adjustable device/PG output for fixed options
GND 3 Regulator ground
IN 2 I Input voltage
OUTPUT 4 O Regulated output voltage
2