2

HV9120/HV9123

Electrical Characteristics

(Unless otherwise specified, V

Symbol Parameters

Min

Typ

Max

Unit

Conditions

Reference

V

REF

Output Voltage

3.92

4.00

4.08

V

R

3.84

4.00

4.16

T

15

30

45

K

Ω

I

SHORT

Short Circuit Current

125

250

µAV

∆V

REF

Change in V

1

0.25

mV/

°CT

Oscillator

f

MAX

Oscillator Frequency

1.0

3.0

MHz

R

f

OSC

80

100

120

KHz

R

160

200

240

∆V

OSC

Voltage Stability

15

%

9.5V < V

TC

OSC

170

ppm/

°CT

PWM

D

MAX

HV9120

49.0

49.4

49.6

%

HV9123

95

97

99

HV9123

225

nsec

D

MIN

Minimum Duty Cycle

0

%

Minimum Pulse Width

80

125

nsec

Current Limit

V

lim

Maximum Input Signal

1.0

1.2

1.4

V

V

t

d

80

150

ns

V

Error Amplifier

V

FB

Feedback Voltage

3.92

4.00

4.08

V

V

I

IN

Input Bias Current

25

500

nA

V

Input Offset Voltage

nulled during trim

A

VOL

60

80

dB

GB

1.0

1.3

MHz

see fig. 1

Ω

I

SOURCE

Output Source Current

-1.4

-2.0

mA

V

I

SINK

Output Sink Current

0.12

0.15

mA

V

PSRR

see fig. 2

dB

Notes:

1. Guaranteed by design. Not subject to production test.

2. Stray C on OSC IN pin must be

≤5pF.