MP1523 – PRECISION 6-LAMP WHITE LED DRIVER

INITIAL RELEASE

07/04, Rev. 1.6

www.MonolithicPower.com

2

PACKAGE REFERENCE

Part Number*

Package

Temperature

MP1523DT

SOT23-5

-40

°C to +85°C

EV0035

Evaluation Board

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

Operating Temperature ..............-40

°C to +85°C

Thermal Resistance

(3)

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)

Parameter

Symbol

Condition

Min

Typ

Max

Units

Supply Current (shutdown)

1

3

µA

Supply Current (quiescent)

650

750

µA

Minimum Off Time, Normal

Operation

300

550

700

ns

Minimum Off Time, Start-Up

(4)

1.25

1.6

µs

Undervoltage Lockout

BIAS Under Voltage Lockout

UVLO

2.1

2.3

2.65

V

Open Lamp Shutdown Threshold

28

V

Enable

EN Threshold

0.8

1.1

1.5

V

EN Hysteresis

60

mV

EN Input Bias Current

1

µA

Feedback Comparator

FB Regulation Threshold

380

400

420

mV

FB Hysteresis

(5)

10

mV

FB Input Bias Current

-150

-80

nA

Output Switch

SW On-Resistance

(5)

0.5

0.6

Ω

SW Current Limit

300

450

650

mA

SW Voltage

BV

25

V

Thermal Shutdown

(5)

160

°C

Thermal Shutdown Hysterisis

(5)

15

°C

Notes:

4) First 64 pulses after EN switches high.

5) Guaranteed by design.

TOP VIEW

SW

GND

FB

1

2

3

5

4

BIAS

EN

MP1523_PD01-SOT23-5