RT8203GA Richtek USA Inc, RT8203GA Datasheet - Page 6
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RT8203GA
Manufacturer Part Number
RT8203GA
Description
IC CTRLR SMPS STPDN DUAL 28SSOP
Manufacturer
Richtek USA Inc
Datasheet
1.RT8203GA.pdf
(24 pages)
Specifications of RT8203GA
Output Isolation
Isolated
Frequency Range
Adjustable, Selectable
Voltage - Input
7 V ~ 24 V
Voltage - Output
Selectable
Power (watts)
1.05W
Operating Temperature
-10°C ~ 85°C
Package / Case
28-SSOP (0.150", 3.90mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
RT8203
Function Block Diagram
www.richtek.com
6
PGOOD
VOUTx
VREF
PRO
FBx
UGATE3
PHASE3
LGATE3
BOOT3
VOUT3
(internal)
LDO3
ILIM3
PRO
ON3
ON5
FB3
SS
EN
0.9xV
0.7xV
1.1xV
Compute
On-time
VIN
REF
REF
REF
+
-
GM
Driver
Driver
+
-
-
+
Power Sequence
-
+
LDO
(3V)
EN3
Logic
UV
OV
U3
L3
S2
+
-
LDO5
Latch
S1
Controller
VOUT3
PWM
-
+
Comp
2.93V
Ton
Q
PWM Controller
TRIG
R
Shutdown
1-SHOT
Thermal
VIN
Ton
QN
Detector
25Khz
Controller
4.65V
VOUT5
PWM
TRIG
QN
Current
Limit
Detector
Min. Toff
1-SHOT
Zero
Reference
U5
+
-
L5
2V
-
+
Driver
Driver
EN5
LDO
(5V)
-
+
+
-
GND
PGOOD
BOOT5
UGATE5
PHASE5
LGATE5
ILIM5
FB5
VOUT5
LDO5
VCC
VREF
DS8203-04 March 2011
Lx
SKIP
PHASEx
Ux
ILIMx