RT8004A 查看數據表（PDF） - Richtek Technology
零件编号
产品描述 (功能)
生产厂家
RT8004A Datasheet PDF : 13 Pages
| |||
RT8004A
Electrical Characteristics
(VDD = 3.3V, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Feedback Reference Voltage
Feedback Leakage Current
Input DC Bias Current
Reference Voltage Line
Regulation
VREF
IFB
(Note 5)
0.784 0.8 0.816 V
--
--
0.4 μA
Active, VFB = 0.78V,
Not switching
180 400 520 μA
Shutdown, VEN < 0.1V (Note 5) --
--
1
μA
VIN = 2.7V to 5.5V (Note 5)
-- 0.04 0.5 %/V
Output Voltage Load Regulation
Measured in Servo Loop,
VCOMP = 1.2V to 1.6V
(Note 5)
-- 0.05 ±0.2 %
Power Good
Power Good Range
Power Good Pull-Down
Resistance
Switching Frequency Range
Sync Frequency Range
Switch On-Resistance, High
Switch On-Resistance, Low
Peak Current Limit
Under Voltage Lockout Threshold
SW Leakage Current
EN/SS Leakage Current
Enable Threshold
fOSC
RPFET
RNFET
ILIM
VEN
ROSC = 309k
Switching Frequency Range
(Note 6)
ILX = 1A
ILX = 1A
VDD Rising
Hysteresis
VEN = 0V, VIN = 5.5V
-- ±12.5
--
--
0.8
1
0.3
--
0.3
--
45
75
45
69
5
5.5
2.25 2.52
-- 0.15
--
--
--
--
0.65 --
±15
120
1.2
4
4
110
100
--
2.7
--
1
1
0.95
%
Ω
MHz
MHz
MHz
mΩ
mΩ
A
V
V
μA
μA
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 natural convection at TA = 25°C on a high effective thermal conductivity four-layer test board of
JEDEC 51-7 thermal measurement standard. The measurement case position of θJC is on the exposed pad of the
packages.
Note 3. Devices are ESD sensitive. Handling precaution recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
Note 5. Specifications over the −40°C to 85°C operation ambient temperature range are assured by design, characterization
and correlation with statistical process controls.
Note 6. The external synchronous frequency must be equal to 1 to 1.3 times of the internal setting frequency. The switching
frequency range is guaranteed by design but not production tested.
www.richtek.com
6
DS8004A-03 March 2011
Share Link: 