HV9120PJ-G datasheet(3/11 Pages) SUTEX

Part #	HV9120PJ-G

Description	High-Voltage, Current-Mode PWM Controller

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Manufacturer	SUTEX [Supertex, Inc]

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3

HV9120

Supertex inc.

www.supertex.com

Doc.# DSFP-HV9120

B060412

Electrical Characteristics

(Unless otherwise specified, V

DD = 10V, +VIN = 48V, RBIAS = 390KΩ, ROSC = 330KΩ, TA = 25°C.)

Sym

Parameter

#

Min

Typ

Max

Units

Conditions

Reference

V

REF

Output voltage

-

3.92

4.00

4.08

V

R

L = 10MΩ

3.84

4.00

4.16

R

L = 10MΩ, TA = -55 to 125

O

C

Z

OUT

Output impedance

#

15

30

45

KΩ

---

I

SHORT

Short circuit current

-

125

250

μA

V

REF = -VIN

ΔV

REF

Change in V

REF with temperature

#

-

0.25

-

mV/°C T

A = -55 to 125°C

Oscillator

f

MAX

Oscillator frequency

-

1.0

3.0

-

MHz

R

OSC = 0Ω

f

OSC

Initial accuracy1

-

80

100

120

KHz

R

OSC = 330KΩ

-

160

200

240

R

OSC = 150KΩ

ΔV

OSC

Voltage stability

-

15

%

9.5V < V

DD < 13.5V

TC

OSC

Temperature coefficient

#

-

170

-

ppm/°C T

A = -55 to 125°C

PWM

D

MAX

Maximum duty cycle

#

49.0

49.4

49.6

%

---

D

MIN

Minimum duty cycle

-

0

%

---

Maximum pulse width before

pulse drops out

#

-

80

125

ns

---

Current Limit

V

LIM

Maximum input signal

-

1.0

1.2

1.4

V

FB = 0V

t

D

Delay to output

#

-

80

120

ns

V

SENSE = 1.5V, VCOMP ≤ 2.0V

Error Amplifier

V

FB

Feedback voltage

-

3.92

4.00

4.08

V

FB shorted to COMP

I

IN

Input bias current

-

25

500

nA

V

FB = 4.0V

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

FB = 3.4V

I

SINK

Output sink current

-

0.12

0.15

-

mA

V

FB = 4.5V

PSRR

Power supply rejection

#

see Fig. 2

dB

---

Notes:

#

Guaranteed by design.

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

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