Rev. 1.00

3

November 4, 2011

HT7L2102

Electrical Characteristics

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Supply Voltage (VCC Pin)

Startup Current

—

12

30

m

A

Operating Current

—

2.0

3.0

mA

—

2.5

—

mA

UVLO (Off)

—

7

8

9

V

UVLO (On)

—

13

14

15

V

OVP Trip Level

26.5

28.0

29.5

V

OVP Strobe Time

—

—

100

—

m

s

Reference Section (VREF Pin)

Output Voltage

—

5.5

—

V

Line Regulation

—

3

20

mV

Load Regulation

—

4

25

mV

Current Sensing (ISE NSE Pin)

Maximum Input Voltage, Vcs(off)

—

0.9

1.0

1.1

V

Leading Edge Blanking Time

—

—

350

—

ns

Delay to Output

—

—

100

—

ns

Oscillator (RT pin)

Oscillator Frequency

Tj=25°C, RT=10kW to GND

49

52

55

kHz

Temperature Stability

-40°C ~105°C

—

5

—

%

Voltage Stability

—

0.2

1.0

%/V

Maximum Duty

—

—

75

—

%

Frequency Jitter

—

—

±4

—

%

Gate Drive Output (GD Pin)

Output Low Level

—

—

1

V

Output High Level

9

—

—

V

Rising Time

Tj=25°C, Load Capacitance=1nF

—

50

150

ns

Falling Time

Tj=25°C, Load Capacitance=1nF

—

50

150

ns

Voltage Feedback (FB/PDM Pin)

Short Circuit Current

—

1.5

2.2

mA

Open Loop Voltage

FB/PDM pin open

—

5.5

—

V

SCP (Short Circuit Protection)

SCP Trip Level

—

4.7

—

V

SCP Delay Time (See Note)

—

75

—

ms

Soft-Start

Soft-Start Time

RT=10kW

—

10

—

ms

External OTP(Over Temperature Protection, TS Pin)

OTP Enable Trigger Level

0.95

1.00

1.05

V

OTP Disable Trigger Level

—

1.2

—

V

Pull up Current Source

96

107

118

m

A

Note:TheseParameters,althoughguaranteed,arenot100%testedinproduction.