2

HV9112

Electrical Characteristics

(Unless otherwise specified, V

Sym

Parameter

#

Min

Typ

Max

Units

Conditions

Reference

V

REF

Output voltage

-

3.88

4.00

4.12

V

R

Z

OUT

Output impedence

#

15

30

45

KΩ

---

I

SHORT

Short circuit current

-

-

125

250

μA

V

ΔV

REF

Change in V

#

-

0.25

-

mV/°C

T

Oscillator

f

MAX

Oscillator frequency

-

1.0

3.0

-

MHz

R

f

OSC

-

80

100

120

KHz

R

-

160

200

240

R

-

Voltage stability

-

-

-

15

%

V

-

Temperature coefficient

#

-

170

-

ppm/°C

T

PWM

D

MAX

Maximum duty cycle

-

49.0

49.4

49.6

%

---

D

MIN

Deadtime

#

-

-

-

ns

---

Minimum duty cycle

-

-

-

0

%

---

Maximum pulse width before pulse

drops out

#

-

80

125

ns

---

Current Limit

Maximum input signal

-

1.0

1.2

1.4

V

V

t

D

Delay to output

#

-

80

120

ns

V

V

Error Amplifier

V

FB

Feedback voltage

-

3.92

4.00

4.08

V

V

I

IN

Input bias current

-

-

25

500

nA

V

V

OS

Input offset voltage

-

nulled during trim

-

---

A

VOL

Open loop voltage gain

#

60

80

-

dB

---

GB

Unity gain bandwidth

#

1.0

1.3

-

MHz

---

Z

OUT

Out impedance

#

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

Power supply rejection

#

see Fig. 2

dB

---

Notes:

#

Guaranteed by design. Not subject to production test.

(1) Stray capacitance on OSC In pin must be ≤5pF.