MP1543 — 1.5A, 500KHZ SYNCHRONOUS RECTIFIED STEP-UP CONVERTER

MP1543 Rev. 1.0

www.MonolithicPower.com

2

1/11/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

TM

PACKAGE REFERENCE

Part Number*

Package

Temperature

MP1543DJ

TSOT23-5

–40

°C to +85°C

For Lead Free, add suffix –LF (eg. MP1543DJ–LF–Z)

ABSOLUTE MAXIMUM RATINGS

(1)

All Pins........................................ –0.3V to +6.5V

Storage Temperature ..............–65

°C to +150°C

Recommended Operating Conditions

(2)

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

°C to +85°C

Thermal Resistance

(3)

TSOT23-5.............................. 220 .... 110..

°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

1.5

1.6

1.8

Startup Supply Voltage

1.7

V

Output Voltage Range

2.5

6.0

V

Supply Current (Shutdown)

1

µA

Supply Current

350

µA

Feedback Voltage

1.2

V

Feedback Input Current

50

nA

Switching Frequency

500

KHz

Maximum Duty Cycle

80

85

90

%

EN Input Low Voltage

0.4

V

EN Input High Voltage

1.4

V

EN Pull Down Resistor

1

MΩ

Low-Side On Resistance

300

mΩ

Low-Side Current Limit

1.5

A

High-Side On Resistance

500

mΩ

Thermal Shutdown

(4)

160

°C

Thermal Shutdown Hysteresis

(4)

30

°C

Note:

4) Guaranteed by design, not tested.

TOP VIEW

FB

GND

OUT

1

2

3

5

4

EN

SW

MP1543_PD01-TSOT23-5