PAM2810ENG datasheet(1/10 Pages) PAM

部件名	PAM2810ENG

功能描述	4-Channel Programmable LED Current Sink

PDF	10 Pages

Scroll/Zoom	100%

制造商	PAM [Power Analog Micoelectronics]

网页	http://www.poweranalog.com

标志

1 / 10 page

Typical Application Circuit

,

Power Analog Microelectronics Inc

Features

Applications

n

White LED for LCD Display Backlights

White LED Keypad Backlights

1-Cell Li-Ion Battery-operated Equipment

Including PDAs, Hand-held PCs, Cellular

Phone

Description

The PAM2810 provides 4 regulated current sinks,

capable of sinking up to 40mA current to

accommodate 4 white LEDs. It requires no charge

pump, has no noise and EMI, and significantly

improves the efficiency in Li bettery range.

LED brightness can be controlled by PWM

techniques. The constant current sink is set with

an external sense resistor.

Alternatively, a PWM signal applied to the EN pin

can vary the anticipated brightness of the LED.

The device is in shut down mode when the EN

input is logic low.

The

is available in SOT23-8 and

PAM2810

n

Cost Effective LED Driver

Support up to 4 White LEDs

Output Current up to 40mA per LED

Low Dropout Voltage

Ultra Low Quiescent Supply Current:

65 A (typ)

No Noise and EMI

Shutdown Current Less than 1 A

Over Temperature Protection

Small Packages : SOT23-8 and DFN

2mmx2mm

Pb-free Package

DFN

mmX2mm Packages.

μ

n

2

1

www.poweranalog.com

PAM2810

4-Channel Programmable LED Current Sink

08/2008 Rev 1.1

PAM2810

LED1 8

LED2 7

LED3

6

LED4

5

GND

3

ISET

1

EN

2

VIN

4

C1

0.1μF

R1

6.2k

VIN

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