DS8817A Datasheet, PDF (6/21 Pages) Richtek Technology Corporation – Dual-Phase PWM Controller with PWM-VID Reference

RT8817A
Parameter
Symbol
Minimum On-Time
Minimum Off-Time
t_ON(MIN)
t_OFF(MIN)
EN Input Voltage
EN Input Voltage ^{Logic-High VENH}
Logic-Low V_ENL
Mode Decision
2 Phase CCM
V_PSI
Test Conditions
2 Phase DEM
V_PSI
1 Phase CCM
1 Phase DEM
V_PSI
V_PSI
PWM-VID Input Voltage for 1.8V GPIO Setting
Logic H
Logic L
V_{PW M-VID_H}
V_{PW M-VID_L}
Protection Function
Zero Current Crossing
Threshold
Current Limit Setting Current
Current Limit Setting Current
Temperature Coefficient
Current Limit Threshold
Absolute Over-Voltage
Protection Threshold
Relative Over-Voltage
Protection Threshold
OV Fault Delay
Relative Under-Voltage
Protection Threshold
UV Fault Delay
Thermal Shutdown
Threshold
VOUT Soft-Start
(PGOOD Blanking Time)
I_OCSET
I_{OCSET_TC}
V_{OVP, Absolute}
V_{OVP, Relative}
V_UVP
T_SD
R_OCSET = 120k
V_REFIN  1.33V
V_REFIN > 1.33V
FB forced above OV threshold
UVP
FB forced above UV threshold
From EN = high to VOUT
regulation point, V_REFIN = 1V
Error Amplifier
VOUT Error Comparator
Threshold (Valley)
V_REFIN = 1V
Min Typ Max Unit
--
70
--
ns
-- 300 --
ns
1.2
--
5.5
V
--
-- 0.55
1.6 1.8 5.5
V
1.08 1.2 1.35 V
0.7 0.8 0.88 V
--
0 0.4
V
1.2
--
--
V
--
-- 0.6
V
8
--
8
mV
9
10 11 A
-- 4700 -- ppm/C
--
100 --
mV
1.9
2 2.1
V
145 150 155 %
--
5
--
s
35 40 45
%
--
3
--
s
-- 150 --
C
--
0.5 --
ms
11 6 1 mV
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is a registered trademark of Richtek Technology Corporation.
DS8817A-00 September 2016