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MP1523

Precision 6-Lamp White LED Driver

Monolithic Power Systems 

MP1523 – PRECISION 6-LAMP WHITE LED DRIVER

INITIAL RELEASE

PACKAGE REFERENCE

TOP VIEW

SW 1

5 BIAS

GND 2

FB 3

4 EN

MP1523_PD01-SOT23-5

Part Number*

MP1523DT

EV0035

Package

Temperature

SOT23-5

-40°C to +85°C

Evaluation Board

* For Tape & Reel, add suffix –Z (eg. MP1523DT–Z)

For Lead Free, add suffix –LF (eg. MP1523DT–LF–Z)

ABSOLUTE MAXIMUM RATINGS (1)

BIAS ............................................... -0.3V to 28V

SW.................................................. -0.5V to 28V

All Other Pins.................................... -0.3V to 6V

Storage Temperature ...............-55°C to +150°C

Recommended Operating Conditions (2)

BIAS Supply Voltage ....................... 2.7V to 25V

Output Voltage....................................VIN to 25V

Operating Temperature ..............-40°C to +85°C

Thermal Resistance (3)

ΘJA (SOT23-5) ..................................... 220°C/W

ΘJC (SOT23-5) ..................................... 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 (4)

VBIAS = VEN = 5.0V, TA = 25°C, unless otherwise noted.

Parameter

Symbol Condition

Supply Current (shutdown)

Supply Current (quiescent)

Minimum Off Time, Normal

Operation

Minimum Off Time, Start-Up

Undervoltage Lockout

BIAS Under Voltage Lockout

Open Lamp Shutdown Threshold

Enable

EN Threshold

EN Hysteresis

EN Input Bias Current

Feedback Comparator

FB Regulation Threshold

FB Hysteresis (5)

FB Input Bias Current

Output Switch

SW On-Resistance (5)

SW Current Limit

SW Voltage

Thermal Shutdown (5)

Thermal Shutdown Hysterisis (5)

IBIAS (OFF)

IBIAS (ON)

TOFF

TOFF

UVLO

RON

BV

VEN = 0V

VFB = 0.45V

VFB = 0V

VFB = 0V (4)

VBIAS Rising, 100mV Hysteresis

VBIAS Rising

VEN Rising

VEN = 0V, 5V

VFB Falling

VFB = 0.2V

ISW = 10µA

Notes:

4) First 64 pulses after EN switches high.

5) Guaranteed by design.

Min Typ Max Units

1

3 µA

650 750 µA

300 550 700 ns

1.25 1.6

µs

2.1 2.3 2.65 V

28

V

0.8 1.1 1.5 V

60

mV

1 µA

380 400 420 mV

10

mV

-150 -80

nA

0.5 0.6 Ω

300 450 650 mA

25

V

160

°C

15

°C

07/04, Rev. 1.6

www.MonolithicPower.com

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