RT8203GA Richtek USA Inc, RT8203GA Datasheet - Page 6

• Manufacturer Part Number: RT8203GA
• Description: IC CTRLR SMPS STPDN DUAL 28SSOP
• Manufacturer: Richtek USA Inc

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