RT9709 datasheet(3/12 Pages) RICHTEK

3 / 12 page

RT9709

DS9709-02 April 2011

www.richtek.com

Electrical Characteristics

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Power- On Reset

RT9709

4.3

6.5

RT9709A

4.3

5.5

Operation Voltage

RT9709B

VIN

4.3

5.9

VIN Rising

2.4

2.6

2.7

Under Voltage Lockout Threshold VUVLO

Hysteresis

100

Quiescent Current

When Enable, VEN < 0.4V

0.5

Shutdown Current

IQ_SD

When Disable, VEN > 1.5V

100

Protections

RT9709

6.65

6.8

7.0

RT9709A

5.65

5.85

6.0

Input OVP

Reference Voltage

RT9709B

VOVP

6.25

6.5

Input OVP Hysteresis

100

Input OVP Propagation Delay

VOUT = VIN x 80%

Over Current Protection

IOCP

0.93

1.07

Over Current Protection Blanking

Time

BTOCP

170

To be continued

Recommended Operating Conditions

(Note 4)

Junction Temperature Range ----------------------------------------------------------------------------------------

−40°C to 125°C

Ambient Temperature Range ----------------------------------------------------------------------------------------

−40°C to 85°C

Absolute Maximum Ratings

(Note 1)

Supply Input Voltage, VIN --------------------------------------------------------------------------------------------

−0.3V to 30V

VOUT, VB ---------------------------------------------------------------------------------------------------------------

−0.3V to 7V

Other Pins ---------------------------------------------------------------------------------------------------------------

−0.3V to 5.5V

Power Dissipation, PD @ TA = 25

°C

WDFN-10L 3x3 --------------------------------------------------------------------------------------------------------- 1.429W

WDFN-12L 4x3 --------------------------------------------------------------------------------------------------------- 1.667W

Package Thermal Resistance (Note 2)

WDFN-10L 3x3,

θJA --------------------------------------------------------------------------------------------------- 70°C/W

WDFN-10L 3x3,

θJC --------------------------------------------------------------------------------------------------- 7°C/W

WDFN-12L 4x3,

θJA --------------------------------------------------------------------------------------------------- 60°C/W

WDFN-12L 4x3,

θJC --------------------------------------------------------------------------------------------------- 7°C/W

Junction Temperature ------------------------------------------------------------------------------------------------- 150

°C

Lead Temperature (Soldering, 10 sec.) --------------------------------------------------------------------------- 260

°C

Storage Temperature Range ----------------------------------------------------------------------------------------

−65°C to 150°C

ESD Susceptibility (Note 3)

HBM (Human Body Mode) ------------------------------------------------------------------------------------------ 3kV

MM (Machine Mode) -------------------------------------------------------------------------------------------------- 250V

(VIN = 5V, CIN = 1uF, TA = 25

°C, unless otherwise specified)

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