MP3204 MPS, MP3204 Datasheet - Page 3

• Manufacturer Part Number: MP3204
• Description: 1.3MHz Fixed Frequency 5 White LED Driver
• Manufacturer: MPS

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ELECTRICAL CHARACTERISTICS
V
Notes:
4) Guaranteed by design, not tested.
PIN FUNCTIONS
MP3204 Rev. 1.3
9/23/2005
Parameters
Enable
EN Threshold
EN Threshold
EN Hysteresis
EN Input Bias Current
Feedback
FB Voltage
FB Input Bias Current
Output Switch
SW On-Resistance
SW Current Limit
Thermal Shutdown
IN
Pin #
= V
1
2
3
4
5
6
EN
= 5V, T
Name
TM
GND
SW
EN
OV
FB
IN
A
= +25°C, unless otherwise noted.
(4)
(4)
Description
Power Switch Output. SW is the drain of the internal MOSFET switch. Connect the power
inductor and output rectifier to SW. SW can swing between GND and 25V.
Ground.
Feedback Input. The MP3204 regulates the voltage across the current sense resistor
between FB and GND. Connect a current sense resistor from the bottom of the LED string
to GND. Connect the bottom of the LED string to FB. The regulation voltage is 104mV.
Regulator On/Off Control Input. A high input at EN turns on the converter, and a low input
turns it off. When not used, connect EN to the input source for automatic startup. The EN
pin cannot be left floating.
Over Voltage Input. OV measures the output voltage for open circuit protection. Connect
OV to the output at the top of the LED string.
Input Supply. This pin must be locally bypassed.
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
Symbol
R
ON
© 2005 MPS. All Rights Reserved.
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Condition
V
V
V
V
Duty Cycle = 60%
EN
EN
EN
FB
(continued)
= 0.1V
Rising
Rising, V
= 0V, 5V
IN
= 2.5V
MP3204 – 6V, 1.3MHz WHITE LED DRIVER
-600
Min
1.0
0.8
94
1.35
-300
Typ
104
350
160
0.5
90
Max
114
1.6
1
Units
mV
mV
mA
µA
nA
°C
Ω
V
V
3