DS8817A Datasheet, PDF (5/21 Pages) Richtek Technology Corporation – Dual-Phase PWM Controller with PWM-VID Reference

RT8817A
Absolute Maximum Ratings (Note 1)
 TON to GND ------------------------------------------------------------------------------------------------------------------ −0.3V to 30V
 RGND to GND --------------------------------------------------------------------------------------------------------------- −0.7V to 0.7V
 BOOTx to PHASEx -------------------------------------------------------------------------------------------------------- −0.3V to 6V
 BOOTx to GND ------------------------------------------------------------------------------------------------------------- −0.3V to 36V
 PHASEx to GND
DC ------------------------------------------------------------------------------------------------------------------------------ −0.3V to 30V
<20ns ------------------------------------------------------------------------------------------------------------------------- −8V to 36V
 UGATEx to PHASEx
DC ------------------------------------------------------------------------------------------------------------------------------ −0.3V to 6V
<20ns ------------------------------------------------------------------------------------------------------------------------- −5V to 7.5V
 LGATEx to GND
DC ------------------------------------------------------------------------------------------------------------------------------ −0.3V to 6V
<20ns ------------------------------------------------------------------------------------------------------------------------- −2.5V to 7.5V
 Other Pins -------------------------------------------------------------------------------------------------------------------- −0.3V to 6V
 Power Dissipation, P_D @ T_A = 25°C
WQFN-24L 4x4 ------------------------------------------------------------------------------------------------------------- 3.57W
 Package Thermal Resistance (Note 2)
WQFN-24L 4x4, θ_JA -------------------------------------------------------------------------------------------------------- 28°C/W
WQFN-24L 4x4, θ_JC ------------------------------------------------------------------------------------------------------- 7°C/W
 Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------------------- 260°C
 Junction Temperature ------------------------------------------------------------------------------------------------------ 150°C
 Storage Temperature Range --------------------------------------------------------------------------------------------- −65°C to 150°C
 ESD Susceptibility (Note 3)
HBM (Human Body Model) ----------------------------------------------------------------------------------------------- 1.5kV
Recommended Operating Conditions (Note 4)
 Input Voltage, VIN ---------------------------------------------------------------------------------------------------------- 2.5V to 26V
 Supply Voltage, PVCC ---------------------------------------------------------------------------------------------------- 4.5V to 5.5V
 Junction Temperature Range --------------------------------------------------------------------------------------------- −40°C to 125°C
 Ambient Temperature Range --------------------------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(TA = 25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
PWM Controller
PVCC Supply Voltage
PVCC Supply Current
V_PVCC
4.5
--
5.5
V
I_SUPPLY
V_EN = 3.3V, 1phase DEM mode, not
switching, VREF external R = 40k
--
0.4
--
mA
PVCC Shutdown Current
PVCC POR Threshold
I_SHDN
V_EN = 0V
--
--
10
A
3.8 4.1 4.4
V
POR Hysteresis
--
0.3
--
V
Switching Frequency
f_SW
R_TON = 500k (Note 5)
270 300 330 kHz
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS8817A-00 September 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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