MP1521EQ データシートの表示（PDF） - Monolithic Power Systems

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MP1521EQ

High Efficiency White LED Driver

Monolithic Power Systems 

Monolithic Power Systems

MP1521

High Efficiency

White LED Driver

Absolute Maximum Ratings

Supply Voltage (VIN)

Switch Voltage to GND

28V

-0.5V to 28V

VEN, VREF, VBRT, VFB1, VFB2, VFB3

Storage Temperature

–0.3V to 6V

-55°C to +150°C

Recommended Operating Conditions

Supply Voltage (VIN)

2.7V to 25V

Operating Temperature

-20°C to +85°C

Switch Voltage to GND

-0.5V to 25V

Package Thermal Characteristics

Thermal Resistance, ΘJA (MSOP10)

Thermal Resistance, ΘJA (QFN16)

150°C/W

60°C/W

Electrical Characteristics (VIN = 5.0V, TA = 25°C unless specified otherwise)

Parameters

Supply Current (shutdown)

Supply Current (quiescent)

Minimum Off Time, normal

operation

Minimum Off Time, start-up

(Note 1)

UVLO

Symbol

IIN (OFF)

IIN (ON)

tOFF (NORMAL)

tOFF (START)

Under Voltage Lockout

Enable

Threshold

Hysterisis

Leakage Current

Open Load Shutdown

Threshold

Leakage Current

Reference

Output Voltage

Load Regulation

Line Regulation

Feedback Comparator

Threshold

Hysterisis (Note 2)

FB Input Bias Current

PWM Mode

Output-Off Threshold

BRT Input Bias

BRT Full Scale Threshold

(Note 3)

Output Switch

Switch On Resistance (Note 2) RON

Switch Current Limit

Leakage Current

Thermal Shutdown (Note 2)

Condition

Min

VEN<0.4V

VEN >1.5V, VBRT=0V, VFB=0V

VEN >1.5V, VBRT =0.6V

VFB =0

400

VEN >1.5V, VBRT =0.6V,

VFB =0V

1.5

VIN RISING

2.1

VIN FALLING

1.9

0.8

VEN=3V

Measured at OLS Pin

VOLS=15V

VOLS=25V

IREF=0A

IREF=0 to 100µA

VIN =3 to 15V, IREF=0A

VBRT =1.2V

VBRT =1.2V

VFB=0.2V

VBRT=0.6V

26

1.20

380

-150

0.18

-100

VIN=5.0V

300

VSW=25V

Typ

1

550

500

Max

3

700

700

2.4

2.6

2.4

1.0 2.0

60

1

29

1

45 70

1.235 1.27

2.5

5

2.5

5

400 420

30

-50

0

0.26

-30

0

1.2

0.5 0.6

400

5

160

Units

µA

µA

nS

µS

V

V

V

mV

µA

V

µA

µA

V

mV

mV

mV

mV

nA

V

nA

V

Ω

mA

µA

°C

Notes:

1) First 64 pulses after EN switches high.

2) Guaranteed by design.

3) The output current is off when BRT is driven below the output-off threshold and full-scale when driven above the full-scale

threshold. To PWM the output drive BRT above and below these thresholds.

MP1521 Rev 2.7 10/06/04

www.monolithicpower.com

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