100V 0.5A Switching Current Buck PFM LED Constant Current Driver

HM9805

Rev 1.0

4

Note1: Stresses greater than those listed under Maximum Ratings may cause permanent damage

to the device. This is a stress rating only and functional operation of the device at these or any

other conditions above those indicated in the operation is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect reliability.

HM9805 Electrical Characteristics

Symbol

Parameter

Test Condition

Min.

Typ.

Max. Unit

VCSP

CSP

Voltage

VIN = 24V to 100V,

Iled=0.3A, Pout=8W

190

200

210

mV

Efficiency

ŋ

VIN=48V, Iled=0.3A, Pout=8W

-

94.8

-

%

Efficiency

ŋ

VIN=60V, Iled=0.3A, Pout=8W

-

94.0

-

%

Efficiency

ŋ

VIN=72V, Iled=0.3A, Pout=8W

-

92.8

-

%

Efficiency

ŋ

VIN=84V, Iled=0.3A, Pout=8W

-

92.3

-

%

Electrical Characteristics (DC Parameters)

Parameters

Symbol

Test Condition

Min.

Typ.

Max. Unit

Input operation voltage

VIN

24

100

V

Switching Frequency

Fosc

Figure4 (8*1W)

VIN=48V

47.4

59.3

71.1

KHz

Switching Frequency

Fosc

Figure4 (8*1W)

VIN=60V

56.2

70.3

84.3

KHz

Switching Frequency

Fosc

Figure4 (8*1W)

VIN=72V

61.2

76.5

91.8

KHz

Switching Frequency

Fosc

Figure4 (8*1W)

VIN=84V

64.1

80.2

96.2

KHz

DMOS

Drain-Source

Breakdown Voltage

120

V

DMOS

Drain-Source on resistor

0.1

0.15

Ohm

Thermal Shutdown

OTP

Tj

165

Thermal Shutdown Window

25

Shenzhen H&M Semiconductor Co.Ltd

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