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RT9232A Datasheet(PDF) 5 Page - Richtek Technology Corporation

Part No. RT9232A
Description  Programmable Frequency Synchronous Buck PWM Controller
Download  14 Pages
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Maker  RICHTEK [Richtek Technology Corporation]
Homepage  http://www.richtek.com
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RT9232A Datasheet(HTML) 5 Page - Richtek Technology Corporation

 
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RT9232A
5
DS9232A-02 March 2007
www.richtek.com
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Error Amplifier
DC gain
--
88
--
dB
Gain-Bandwidth product
GBW
--
15
--
MHz
Slew Rate
SR
COMP=10pF
--
6
--
V/
μs
Soft Start
External SS Source Current
ISS
7
10
--
μA
PWM Controller Gate Driver
Upper Drive Source
RUG_SC
VBOOT-PHASE = 12V
VBOOT-UGATE = 1V
--
3.3
--
Ω
Upper Drive Sink
RUG_SK
VBOOT-PHASE = 12V
VUGATE-PHASE = 1V
--
3.7
--
Ω
Lower Drive Source
RLG_SC
VPVCC – LGATE = 1V
--
2.5
--
Ω
Lower Drive Sink
RLG_SK
VLGATE – PGND = 1V
--
2.1
--
Ω
Driving Capability
Upper Drive Source
IUG_SC
VBOOT-UGATE = 12V
--
1.7
--
A
Upper Drive Sink
IUG_SK
VUGATE-PHASE = 12V
--
1.2
--
A
Lower Drive Source
ILG_SC
VPVCC – LGATE = 12V
--
2.6
--
A
Lower Drive Sink
ILG_SK
VLGATE – PGND = 12V
--
2.4
--
A
Protection
Under-Voltage Protection
FB Falling
0.5
0.6
0.7
V
Under-Voltage Protection Delay
--
30
--
μs
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.
Devices are ESD sensitive. Handling precaution recommended.
Note 3.
The device is not guaranteed to function outside its operating conditions.
Note 4.
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.


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