TM
MP1543 — 1.5A, 500KHZ SYNCHRONOUS RECTIFIED STEP-UP CONVERTER
PACKAGE REFERENCE
ABSOLUTE MAXIMUM RATINGS (1)
All Pins........................................–0.3V to +6.5V
Storage Temperature ..............–65°C to +150°C
TOP VIEW
Recommended Operating Conditions (2)
Supply Voltage VIN............................. 1.8V to 6V
Output Voltage VOUT .......................... 2.5V to 6V
Operating Temperature .............–40°C to +85°C
FB
GND
OUT
1
2
3
5
EN
Thermal Resistance (3)
θJA
θJC
4
SW
TSOT23-5..............................220.... 110.. °C/W
MP1543_PD01-TSOT23-5
Notes:
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
operating conditions.
Part Number*
Package
TSOT23-5
Temperature
MP1543DJ
–40°C to +85°C
3) Measured on approximately 1” square of 1 oz copper.
For Tape & Reel, add suffix –Z (eg. MP1543DJ–Z)
For Lead Free, add suffix –LF (eg. MP1543DJ–LF–Z)
*
ELECTRICAL CHARACTERISTICS
VEN = VOUT = 3.3V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
1.6
1.7
Max
Units
ILOAD = 0mA
VST
1.5
1.8
Startup Supply Voltage
V
R
LOAD = 50Ω
Output Voltage Range
Supply Current (Shutdown)
Supply Current
VOUT
2.5
6.0
V
µA
µA
V
VEN = VOUT 0V, VSW = 5V
VFB = 1.3V
1
350
1.2
50
Feedback Voltage
VFB
Feedback Input Current
Switching Frequency
Maximum Duty Cycle
EN Input Low Voltage
EN Input High Voltage
EN Pull Down Resistor
Low-Side On Resistance
Low-Side Current Limit
High-Side On Resistance
Thermal Shutdown (4)
Thermal Shutdown Hysteresis (4)
VFB = 1.2V
nA
KHz
%
fSW
500
85
DMAX
80
90
0.4
V
1.4
V
1
MΩ
mꢀ
A
RONLS VOUT = 3.3V
ILIM
300
1.5
500
160
30
RONHS VOUT = 3.3V
mꢀ
°C
°C
Note:
4) Guaranteed by design, not tested.
MP1543 Rev. 1.0
1/11/2006
www.MonolithicPower.com
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© 2006 MPS. All Rights Reserved.
2
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