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LM2788 Product Folder

120mA High Efficiency Step-Down Switched Capacitor Voltage Converter

See Also:		LM2798 - HAS BATTERY-OK AND OUTPUT-OK FLAGS
		LM2750 - 5V @ 120MA OUTPUT FROM 2.7V TO 5.6V INPUT. SWITCHED CAPACITOR CONVERTER

Generic P/N 2788

Parametric Table

Temperature Min (deg C)	-40
Temperature Max (deg C)	85
Multiple Output Capability	No
On/Off Pin	Yes
Error Flag	No
InputMin Voltage (Volt)	2.60
InputMax Voltage (Volt)	5.50
Output Current (mA)	120
Output Voltage (Volt)	1.50, 1.80, 2

Adjustable Output	No
Switching Frequency (Hz)	500000
Adj Switch Frequency	No
Sync Pin	No
Efficiency (%)	90
Inverting	No
Step-Up	No
Step-Down	Yes
RegType	Switched Cap Regulator

Datasheet

Title	Size in Kbytes	Date	View Online	Download	Receive via Email
LM2788 120mA High Efficiency Step-Down Switched Capacitor Voltage Converter	372 Kbytes	8-Oct-02	View Online	Download	Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part Number

Package

Status

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking

Type

Pins

MSL/Lead-Free Availability

Lead
Time

Qty

SPICE

IBIS

Qty

$US each

LM2788MM-1.5

MINI SOIC

Status

Full production

N/A

1K+

$0.93

reel
of
1000

ZXTT
S30B

9-11 weeks

20000

LM2788MM-1.8

MINI SOIC

Status

Full production

N/A

1K+

$0.93

reel
of
1000

ZXTT
S23B

9-11 weeks

20000

LM2788MM-2.0

MINI SOIC

Status

Full production

N/A

1K+

$0.93

reel
of
1000

ZXTT
S24B

9-11 weeks

1000

LM2788MMX-1.5

MINI SOIC

Status

Full production

N/A

1K+

$0.93

reel
of
3500

ZXTT
S30B

9-11 weeks

10000

LM2788MMX-1.8

MINI SOIC

Status

Full production

N/A

1K+

$0.93

reel
of
3500

ZXTT
S23B

9-11 weeks

20000

LM2788MMX-2.0

MINI SOIC

Status

Full production

N/A

1K+

$0.93

reel
of
3500

ZXTT
S24B

9-11 weeks

1000

The LM2788 switched capacitor step-down DC/DC converter efficiently produces a 120mA regulated low-voltage rail from a 2.6V to 5.5V input. Fixed output voltage options of 1.5V, 1.8V, and 2.0V are available. The LM2788 uses multiple fractional gain configurations to maximize conversion efficiency over the entire input voltage and output current ranges. Also contributing to high overall efficiency is the extremely low supply current of the LM2788: 32µA operating unloaded and 0.1µA in shutdown.

The optimal external component requirements of the LM2788 solution minimize size and cost, making the part ideal for Li-Ion and other battery powered designs. Two 1µF flying capacitors and two 10µF bypass capacitors are all that are required, and no inductors are needed.

The LM2788 also features noise-reducing soft-start circuitry, short-circuit protection and over-temperature protection.

Features

Output voltage options: 2.0V ± 5%, 1.8V ± 5%, 1.5V ± 6%
120mA output current capability
Multi-Gain and Gain Hopping for Highest Possible Efficiency - up to 90% Efficient
2.6V to 5.5V input range
Low operating supply current: 32µA
Shutdown supply current: 0.1µA
Thermal and short circuit protection
Available in an 8-Pin MSOP Package

Applications

Cellular Phones
Pagers
H/PC and P/PC Devices
Portable Electronic Equipment
Handheld Instrumentation

Reliability Metrics

Part Number	Process	Sample Size (EFR)	Device Hours	Long Term Failure Rates (FITS)	MTTF
LM2788MM-1.5	CS065	8800	600000	6	169643205
LM2788MM-1.8	CS065	8800	600000	6	169643205
LM2788MM-2.0	CS065	8800	600000	6	169643205
LM2788MMX-1.5	CS065	8800	600000	6	169643205
LM2788MMX-1.8	CS065	8800	600000	6	169643205
LM2788MMX-2.0	CS065	8800	600000	6	169643205

For more information on Reliablitity Metrics, please click here.

[Information as of 15-Jan-2004]

LM2788 Product Folder

Datasheet

Package Availability, Models, Samples & Pricing

General Description

Features

Applications

Reliability Metrics