DS9610B Datasheet, PDF (6/12 Pages) Richtek Technology Corporation – High Voltage Synchronous Rectified Buck MOSFET Driver for Notebook Computer

RT9610B
Note 1. Stresses beyond those listed “Absolute Maximum Ratings” may cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in
the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may
affect device reliability.
Note 2. θJA is measured under natural convection (still air) at TA = 25°C with the component mounted on a high effective-
thermal-conductivity four-layer test board on a JEDEC 51-7 thermal measurement standard. θJC is measured at the
exposed pad of the package.
Note 3. Devices are ESD sensitive. Handling precaution recommended. The human body mode is a 100pF capacitor is
charged through a 1.5kΩ resistor into each pin.
Note 4. The device is not guaranteed to function outside its operating conditions.
Typical Application Circuit
L1
2.2µH
V_BAT
V_IN
C8
C9
C10
C11
C12
C13 C14
C2
R2 ^1µF
R1
V_CC
BOOT
VCC UGATE
C1
1µF
RT9610B
Chip Enable
EN
PHASE
PWM
PWM LGATE
GND
R3
Q1
L2
1µH
V_CORE
C3
R4
3.3nF
Q2 _R5
C4
C5
C6
C7
2.2
Timing Diagram
PWM
LGATE
t_PDLL
90%
1.5V
UGATE
1.5V
t_PDHU
t_PDLU
1.5V
90%
1.5V
t_PDHL
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www.richtek.com
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is a registered trademark of Richtek Technology Corporation.
DS9610B-07 August 2016