TPS60120, TPS60121, TPS60122, TPS60123, TPS60124, TPS60125

REGULATED 200-mA HIGH EFFICIENCY CHARGE PUMP

DC/DC CONVERTERS

SLVS257B – NOVEMBER 1999 – REVISED AUGUST 2000

7

POST OFFICE BOX 655303

low-battery detector (TPS60120, TPS60122, TPS60124) (continued)

A 100-nF bypass capacitor should be connected in parallel to R2 if large line transients are expected. These

voltage drops can inadvertently trigger the low-battery comparator and produce a wrong low-battery warning

signal at the LBO terminal.

power-good detector (TPS60121, TPS60123, TPS60125)

The PG terminal is an open-drain output that is pulled low when the output is out of regulation. When the output

voltage rises to about 90% of its nominal voltage, the power-good output is released. PG is high impedance

when the device is disabled. A pullup resistor must be connected between PG and OUT. The pullup resistor

should be in the 100-k

Ω to 1-MΩ range. If the power-good function is not used, then PG should remain

unconnected.

CO

22

µF

Output

3.3 V, 200 mA

Input

1.8 V to 3.6 V

IN

IN

NC

C1+

C1–

ENABLE

PGND GND

OUT

OUT

FB

PG

C2+

C2–

C2

2.2

µF

C1

2.2

µF

Off/On

CI

10

µF

R1

1 M

Ω

TPS60121

Power-Good Output

Figure 2. Typical Operating Circuit Using Power-Good Comparator

–0.3 V to 5.5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous total power dissipation

See dissipation rating table

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous output current TPS60120, TPS60121, TPS60124, TPS60125

300 mA

. . . . . . . . . . . . . . . . . . . . . .

Continuous output current TPS60122, TPS60123

150 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–55

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16 inch) from case for 10s

260

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

150

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: V(ENABLE),V(LBI),andV(LBO/PG)canexceedVIuptothemaximumratedvoltagewithoutincreasingtheleakagecurrentdrawnbythese

inputs.