MP3352 – 60V, 2.5A INTEGRATED PHOTO FLASH CHARGER WITH IGBT DRIVER AND QUENCH

MP3352 Rev. 0.9

www.MonolithicPower.com

3

11/12/2008

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2008 MPS. All Rights Reserved.

Parameter

Conditions

Min

Typ

Max

Unit

RDYB Leakage Current

V(RDYB)=3.3V

1

µA

RDYB Output Low Voltage

0.2

V

45

75

105

µs

Thermal Shutdown

150

QREF input current

-0.1

0.1

µA

QSNS-QREF offset voltage

-50

50

mV

QSNS input current

-0.1

0.1

µA

QSNS to IGBT Delay

2

µs

IGBT Driver

IGBTOUT pull-up ON

resistance

5

Ω

IGBTOUT pull-down ON

resistance

5

Ω

IGBTIN Input High Voltage

2.4

V

IGBTIN Input Low Voltage

0.6

V

Propagation delay

IGBTIN rising/falling edge to

IGBTOUT rising/falling edge,

45

ns

IGBTOUT rise time

60

ns

IGBTOUT fall time

70

ns

Pull down resistance of

IGBTIN

100K

Ω

PIN FUNCTIONS

Pin #

Name

Function

1

ISET

2

GND

Analog Ground. Tie it directly to local ground plane.

3

QREF

Quench reference input.

4

QSNS

Quench sense input from light sensor.

5

IGBTOUT

Output Drive for IGBT Gate. Connect this pin to the gate of the IGBT.

6

VIN

Input Supply Pin. Connect it to system supply voltage. Bypass VIN to GND

with a 2x10µF or greater ceramic capacitor.

7, 8

PGND

Power Ground. Ground connection for the power switch.

9

CHARGE

Charge Enable Pin. A low-to-high transition on this pin puts the part into power

delivery mode. Once the target voltage is reached, the part will stop charging

the output. Toggle this pin will start charging again. Bring this pin low will

terminate the power delivery and put the part in shutdown.

10, 11

N/C

No Connect

12, 13

SW

Switch Pin. This is the drain of the internal power switch.

14

IGBTIN

Logic Input Pin for IGBT Drive.

15

RDYB

Open-Drain Power-Ready Output. RDYB goes low when the output voltage is

reached.

16

FB

Feedback Pin. Trip voltage is 1.2V.