AL8807B Ver la hoja de datos (PDF) - Diodes Incorporated.

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Fabricante

AL8807B

HIGH EFFICIENCY 36V 1.3A PWM DIMMABLE BUCK LED DRIVER

Diodes Incorporated. 

AL8807B

Absolute Maximum Ratings

Symbol

ESD HBM

ESD MM

VIN

VSW

VCTRL

ISW-RMS

ISW-PK

TJ

TLEAD

TST

Parameter

Human Body Model ESD Protection

Machine Model ESD Protection

Continuous VIN Pin Voltage Relative to GND

SW Voltage Relative to GND

CTRL Pin Input Voltage

DC or RMS Switch Current

Peak Switch Current (<10%)

Junction Temperature

Lead Temperature Soldering

Storage Temperature Range

MSOP-8EP

Ratings

Unit

2.5

kV

200

V

-0.3 to +40

V

-0.3 to +40

V

-0.3 to +6

V

1.6

A

2.5

A

+150

°C

+300

°C

-65 to +150

°C

Caution:

Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only;

functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be

affected by exposure to absolute maximum rating conditions for extended periods of time.

Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when handling

and transporting these devices.

Recommended Operating Conditions

Symbol

VIN

VCTRLH

VCTRLL

fSW

ISW

TJ

Parameter

Operating Input Voltage Relative to GND

Voltage High for PWM Dimming Relative to GND

Voltage Low for PWM Dimming Relative to GND

Maximum Switching Frequency

Continuous Switch Current

Junction Temperature Range

MSOP-8EP

Min

Max

6.0

36

2.5

5.5

0

0.4

—

1

—

1.3

-40

+125

Unit

V

V

V

MHz

A

°C

Electrical Characteristics (VIN = 12V, @TA = +25°C, unless otherwise specified.)

Symbol

Parameter

Conditions

Min

VINSU

Internal Regulator Start Up Threshold VIN rising

—

VINSH Internal Regulator Hysteresis Threshold VIN falling

100

IQ

Quiescent Current

Output not switching (Note 4)

—

IS

Input Supply Current

CTRL pin floating f = 250kHz

—

VTH

Set Current Threshold Voltage

—

95

VTH-H

Set Threshold Hysteresis

—

—

ISET

SET Pin Input Current

VSET = VIN-0.1

—

RCTRL CTRL Pin Input Resistance

Referred to internal reference

—

VREF

Internal Reference Voltage



—

RDS(ON) On Resistance of SW MOSFET

ISW = 1A

—

tR

SW Rise Time

VSENSE = 100 ±20mV fSW = 250kHz

—

tF

SW Fall Time

VSW = 0.1V~12V~0.1V CL = 15pF

—

TOTP

Over-Temperature Shutdown

—

—

TOTP-Hyst Over-Temperature Hysteresis

—

—

ISW_Leakage Switch Leakage Current

VIN =36V

—

θJA

Thermal Resistance Junction-to-

Ambient (Note 5)

(Note 6)

—

θJC

Thermal Resistance Junction-to-case

(Note 7)

(Note 6)

—

Typ

—

—

—

1.8

100

±15

16

50

2.5

0.25

12

20

155

55

—

69

4.3

Max

Unit

5.9

V

300

mV

350

µA

5

mA

105

mV

—

mV

22

µA

—

kΩ

—

V

0.4

Ω

—

ns

—

ns

—

°C

—

°C

0.5

μA

—

°C/W

—

—

Notes:

4. AL8807B does not have a low power standby mode but current consumption is reduced when output switch is inhibited: VSENSE = 0V. Parameter is

tested with VCTRL ≤ 2.5V.

5. Refer to figure 39 for the device derating curve.

6. Test condition for MSOP-8EP: Device mounted on FR-4 PCB (51mm x 51mm 2oz copper, minimum recommended pad layout on top layer and

thermal vias to bottom layer with maximum area ground plane. For better thermal performance, larger copper pad for heat-sink is needed.

7. Dominant conduction path is via exposed pad.

AL88070B

Document number: DS36191 Rev. 1 - 2

3 of 18

www.diodes.com

March 2014

© Diodes Incorporated

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