RT9221 查看數據表（PDF） - Richtek Technology
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RT9221 Datasheet PDF : 8 Pages
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RT9221
Absolute Maximum Ratings
z VCC to GND
z PGND to GND
z BSTH and BSTL to GND
z Ambient Temperature Range
z Junction Temperature Range
z Storage Temperature Range
z Lead Temperature (Soldering, 10 sec.)
z Package Thermal Resistance
SOP-24, θJA
-0.3 to +5.5V
± 0.3V
-0.3 to +14V
0 to +70°C
0 to +125°C
-65 to +150°C
300°C
75°C/W
Electrical Characteristics
(VCC = 5V; GND = 0V; PGNDH = PGNDL = 0V; VSEN = VOUT; 0mV < (VCSP-VCSN) < 60mV; TA = 25°C)
Parameter
Symbol
Test Conditions
Min Typ Max
Switching Section
Output Voltage
Supply Voltage
Supply Current
Load Regulation
Line Regulation
Power On Reset Trip Point
VOUT IO = 2A
VCC
VCC
ICC
∆VLOAD IO = 0.8A to 15A
∆VLINE VCC = 4.75V to 5.25V
VCC Rising
--
(1)
--
4.5
--
5.5
--
3
6
--
1
--
--
0.5
--
--
4.2
--
Current Limit Voltage
Oscillator Frequency
VLIMIT VCSP - VCSN
65
75
85
170 200 230
Oscillator Max Duty Cycle
DH Source
DH Sink
DL Source
DL Sink
OVP Threshold Voltage
DMAX
VBSTH - VDH = 1V
VDH - VPGNDH = 1V
VBSTH - VDL = 3V
VDL - VPGNDL = 1V
90
95
--
--
3.5
--
--
3.5
--
--
2
--
--
2
--
114 120 122
OVP Source Current
Power Good Threshold Voltage
IOVP
VOVP = 3.0V
VSEN Rising
10
--
--
87
--
113
Linear Sections
Quiescent Current
IQ
Output Voltage (LDO1 RT9221)
LDOV = 12V
--
--
5
2.450 2.500 2.550
Output Voltage (LDO2 RT9221)
1.470 1.500 1.530
Gain (AOL)
Load Regulation
Line Regulation
Note: (1) See output voltage table.
LDOS (1,2) to GATE (1,2)
∆VLOAD IO = 0 to 5A
∆VLINE LDOV = 11.4V to 12.6V
--
65
--
--
1
--
--
1
--
Units
--
V
mA
%
%
V
mV
KHz
%
Ω
Ω
Ω
Ω
%
mA
%
mA
V
V
dB
%
%
www.richtek-ic.com.tw
2
DS9222-05 May 2001
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