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RT9221 Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers

Part No. RT9221
Description  PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER WITH 1.5V / 2.5V DUAL LOW DROPOUT LINEAR REGULATOR CONTROLLER
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RT9221 Datasheet(HTML) 2 Page - List of Unclassifed Manufacturers

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


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