VOUT

VIN

2.7 V to 5.6 V

GND

LM2750-5.0

CAP+

CAP-

SD

2.2 PF

2.2 PF

1 PF

5 V ± 4%

8, 9

1, 2

4

10

7

3, 5, 6, DAP

Capacitors: 1 PF - TDK C1608X5R1A105K

2.2 PF - TDK C2012X7R1A225K

Copyright © 2016, Texas Instruments Incorporated

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

LM2750, LM2750-ADJ

SNVS180N – APRIL 2002 – REVISED APRIL 2016

LM2750 Low-Noise Switched-Capacitor Boost Regulator

1

1 Features

1

•

Wide Input Voltage Range: 2.7 V to 5.6 V

•

Inductorless Solution: Application Requires Only

Three Small Ceramic Capacitors

•

Fixed 5-V Output and Adjustable Output Voltage

Options Available

•

85% Peak Efficiency

–

70% Average Efficiency Over Li-Ion Input

Range (2.9 V to 4.2 V)

•

Output Current up to 120 mA With 2.9 V

5.6 V

–

Output Current up to 40 mA With 2.7 V

2.9 V

•

Fixed 1.7-MHz Switching Frequency for a Low-

Noise, Low-Ripple Output Signal

•

Pre-Regulation Minimizes Input Current Ripple,

Keeping the Battery Line

•

Shutdown Supply Current Less Than 2 µA

•

Tiny WSON Package With Outstanding Power

Dissipation: Usually No Derating Required

2 Applications

•

White and Colored LED-Based Display Lighting

•

Cellular Phone SIM Cards

•

Audio Amplifier Power Supplies

•

General Purpose Li-Ion-to-5-V Conversion

•

EPOS Barcode Scanners

•

Industrial Handheld Radios

3 Description

The

LM2750

is

a

regulated

switched-capacitor

doubler that produces a low-noise output voltage. The

5-V output voltage option (LM2750-5.0) can supply up

to 120 mA of output current over a 2.9-V to 5.6-V

input range, as well as up to 40 mA of output current

when the input voltage is as low as 2.7 V. An

adjustable output voltage option with similar output

current capabilities is also available (LM2750-ADJ).

The LM2750 has been placed in TI's 10-pin WSON, a

package with excellent thermal properties that keeps

the part from overheating under almost all rated

operating conditions.

A perfect fit for space-constrained, battery-powered

applications, the LM2750 requires only three external

components:

one

input

capacitor,

one

output

capacitor,

and

one

flying

capacitor.

Small,

inexpensive ceramic capacitors are recommended for

use. In conjunction with the

1.7-MHz fixed switching frequency of the LM2750,

these capacitors yield low output-voltage ripple, which

is beneficial for systems requiring a low-noise supply.

Pre-regulation minimizes input current ripple, thus

reducing input noise to negligible levels.

A tightly controlled soft-start feature limits inrush

currents during part activation. Shutdown completely

disconnects the load from the input. Output current

limiting and thermal shutdown circuitry protect both

the LM2750 and other connected devices in the event

of output shorts or excessive current loads.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LM2750

LM2750-ADJ

WSON (10)

3.00 mm × 3.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Typical Application Circuit