HT3402S

6/11

40V/2A Constant Voltage & Constant Current Buck Converter IC

www.hotchip.com.cn

Ver1.1

Absolute Maximum Ratings

PARAMETER

SYMBOL

MIN

MAX

UNITS

Input Supply Voltage

10

40

V

Operating Temperature Range

-20

85

°C

Storage Temperature Range

-20

150

°C

Junction Temperature

θJA

---

125

°C

Lead Temperature (Soldering, 10s)

---

260

°C

Electrical Characteristics

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Power Supply Input Voltage

-

10

-

40

V

Output Voltage

-

4.95

5.1

5.25

V

Constant Current Mode Charge

Current

2.0

2.40

2.8

A

1.0

1.20

1.40

A

Quiescent current

No load

-

-

220

μA

Output Ripple Voltage

50

-

80

mV

6

10

12

mS

F

Frequency

120

150

180

KHz

Short Circuit threshold

-

1.0

1.5

1.8

V

Recover Short Circuit threshold

-

1.5

1.8

2.0

V

Short Circuit Current

When short- circuit

appears

1.5

2

3

mA

Cable compensation voltage

2000k x Iload x Rsen

-

-

1000

mV

Over temperature threshold

-

130

140

150

℃

Release threshold from over temperature

-

110

120

130

℃

Typical Operating Characteristics

(Circuit of Figure 1,TA = 25° C, VIN=12V, VOUT=5.1V, unless other specified.)