HF900 – 900V OFFLINE SWITCHING REGULATOR

HF900 Rev. 1.0

www.MonolithicPower.com

5

8/4/2015

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© 2015 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

25°C, unless otherwise noted.

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Start-Up Current Source (DRAIN)

Supply current from DRAIN

1.35

2

3.1

mA

Leakage current from DRAIN

15

30

μA

Breakdown voltage

900

V

13

17

Ω

On-state resistance

VCC = 10.1V;

22

26

Ω

Supply Voltage Management (VCC)

VCC upper level where the

IC switches on

11.5

13.0

14.5

V

VCC lower level where the

IC switches off

8.9

9.4

10.1

V

VCC hysteresis

2.7

3.6

4.6

V

VCC OVP level

24.5

26.0

27.3

V

VCC re-charge level where

the protection occurs

4.5

5.3

6

V

Quiescent current at

protection phase

VCC = 6V

700

μA

Quiescent current

VCC = 13V

780

980

µA

Operation current

1.7

2

mA

Feedback Management (FB)

Internal pull-up resistor

10

kΩ

Internal pull-up voltage

3.8

4.1

4.4

V

FB

to

current-set-point

division ratio

3.3

3.6

Internal soft-start time

3

ms

FB decreasing level where

the regulator enters burst

mode

0.4

0.5

0.6

V

FB increasing level where the

regulator leaves burst mode

0.58

0.70

0.86

V

Overload set point

3.5

3.8

4.1

V

Overload delay time

82

ms

Timing Resistor (FSET)

FSET reference voltage

1.15

1.23

1.3

V

Frequency spectrum jittering

range in percentage of Fs

jittering is ±4kHz

±4

%

Typical operating frequency

90

104

118

kHz