MP1529 – FIXED FREQUENCY STEP-UP CONVERTER LCD BACKLIGHT PLUS FLASH

MP1529 Rev. 1.0

www.MonolithicPower.com

2

11/23/2005

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2005 MPS. All Rights Reserved.

TM

PACKAGE REFERENCE

MP1529_PD01-QFN16

TOP VIEW

PIN 1 ID

EN1

EN2

COMP

SS

OUT

ISET3

ISET2

ISET1

1

2

3

4

13

14

15

16

8

7

6

5

LED1

LED2

GND

LED3

PGND

SW

PGND

IN

12

11

10

9

EXPOSED PAD

ON BACKSIDE

CONNECT TO PIN 6

Part Number*

Package

Temperature

MP1529DR

QFN16

(4mm x 4mm)

–40

°C to +85°C

For Lead Free, add suffix –LF (eg. MP1529DR–LF–Z)

ABSOLUTE MAXIMUM RATINGS

(1)

All Other Pins................................. –0.3V to +6V

Junction Temperature...............................125

°C

Lead Temperature ....................................260

°C

Storage Temperature ..............–65°C to +150

°C

Recommended Operating Conditions

(2)

LED Current (Backlight)............ 30mA Maximum

LED Current (Flash) ............... 150mA Maximum

Operating Temperature .............–40

°C to +85°C

Thermal Resistance

(3)

QFN16 (4mm x 4mm)............. 60 ...... 12...

°C/W

Notes:

1) Exceeding these ratings may damage the device.

2) The device is not guaranteed to function outside of its

operating conditions.

3) Measured on approximately 1” square of 1 oz copper.

ELECTRICAL CHARACTERISTICS

Parameter

Symbol

Condition

Min

Typ

Max

Units

Shutdown Supply Current

0.5

1

µA

Supply Current

mode without switching

1.5

3

mA

Under Voltage Lockout

2.0

2.6

V

Under Voltage Lockout Hysteresis

210

mV

OUT Over Voltage Threshold

28

V

OUT Leakage Current

1

µA

ISET1 Backlight Current Gain

0.95

mA/µA

ISET2 Preview Current Gain

1.1

mA/µA

ISET3 Flash Current Gain

1

mA/µA

ISET1, ISET2 and ISET3 Voltage

1.216

V

LED1 and LED2 Voltage

440

mV

LED3 Voltage

480

mV

SW Switch On Resistance

0.25

Ω

SW Switch Leakage Current

1

µA

SW Switch Current Limit

1.2

A