RT8803A_11 Datasheet, PDF (17/27 Pages) Richtek Technology Corporation – 2/3-Phase PWM Controller for High-Density Power Supply

RT8803A
Parameter
Symbol Test Conditions
Min
Typ
Max
Unit
Reference and DAC
DACOUT Voltage Accuracy
ΔV_DAC
DAC (VID0-VID125) Input Low
DAC (VID0-VID125) Input High
V_ID Pull-up Resistance
OFS Pin Voltage
Error Amplifier
V_ILDAC
V_IHDAC
V_OFS
V_DAC ≥ 1V
1V ≥ V_DAC ≥ 0.8V
V_DAC < 0.8V
−0.5
−5
−8
--
1/2V_TT + 0.2
12
R_OFS = 100kΩ
0.9
--
0.5
%
--
5
mV
--
8
mV
-- 1/2V_TT − 0.2 V
--
--
V
15
18
kΩ
1.0
1.1
V
DC Gain
--
65
--
dB
Gain-Bandwidth Product
GBW
--
10
--
MHz
Slew Rate
SR
COMP = 10pF
--
8
--
V/μs
Current Sense GM Amplifier
CSN Full Scale Source Current
CSN Current for OCP
I_ISPFSS
100
--
--
μA
150
--
--
μA
Protection
Over-Voltage Trip (FB-DACOUT) ΔOVT
100
150
200
mV
IMAX Voltage
Power Good
V_{IM AX}
R_IMAX = 20k
0.9
1.0
1.1
V
Output Low Voltage
V_PGOODL I_PGOOD = 4mA
--
--
0.2
V
Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for
stress ratings. 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 for extended
periods may remain possibility to affect device reliability.
Note 2. θJA is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board of
JEDEC 51-3 thermal measurement standard.
Note 3. Devices are ESD sensitive. Handling precaution recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
DS8803A-06 April 2011
www.richtek.com
17