LP5551

www.ti.com

SNVS417B – DECEMBER 2006 – REVISED APRIL 2013

AVS/DVS Switcher Characteristics

apply for TJ = 25°C. Limits appearing in boldface type apply over the entire junction temperature range for operation, -40 to

+125°C

(1) (2) (3)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Output Voltage

-4.1%

1.2

4.3%

V

Programmable Output Voltage

0.6

1.2

1.2

V

Programming Resolution = 4.7 mV

Range

Line regulation

0.18

%/V

Load regulation

0.011

%/mA

Quiescent current consumption

15

µA

P-FET resistance

425

690

m

Ω

N-FET resistance

345

635

m

Ω

Switch peak current limit

350

520

750

mA

Internal oscillator frequency

PWM-mode

805

1000

1125

kHz

Output Capacitance

22

µF

0 mA

Output Capacitor ESR

5

500

m

Ω

L

Inductor inductance

0 mA

4.7

µH

150

440

k

Ω

(1)

All voltages are with respect to the potential at the GND pin.

(2)

All limits are ensured by design, test and/or statistical analysis. All electrical characteristics having room-temperature limits are tested

during production with TJ = 25C. All hot and cold limits are ensured by correlating the electrical characteristics to process and

temperature variations and applying statistical process control.

(3)

Capacitors: Low-ESR Surface-Mount Ceramic Capacitors are (MLCCs) used in setting electrical characteristics

Copyright © 2006–2013, Texas Instruments Incorporated

Submit Documentation Feedback

11

Product Folder Links: LP5551