RT8203GA Richtek USA Inc, RT8203GA Datasheet - Page 8

• 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
www.richtek.com
8
DC Load Regulation
Line Regulation
Current-Limit Threshold
(Positive, Default)
Current-Limit Threshold
(Positive, Adjustable)
Zero-Current Threshold
Soft-Start Ramp Time
Operating Frequency
On-Time Pulse Width
Minimum Off-time
Maximum Duty Cycle
Internal Regulator And Reference Voltage
LDO5 Output Voltage
LDO5 Short-Circuit Current
VCC Under-Voltage
Lockout Fault Threshold
LDO5 Bootstrap Switch
Threshold
LDO5 Bootstrap Switch
Resistance
LDO3 Output Voltage
LDO3 Short-Circuit Current
LDO3 Bootstrap Switch
Threshold
Parameter
ΔV
ΔV
f
t
Symbol
OSC
OFF
LOAD
LINE
Either SMPS, V
Either SMPS, V
Either SMPS, V
Either SMPS, 7V< V
I
V
V
V
SKIP = GND, I
Zero to full limit
V
V
V
V
SKIP = V
V
V
V
V
ONx = GND, 7V < V
0 < I
LDO5 = GND
Falling edge of VCC,
hysteresis = 1%
Falling edge of VOUT5, rising edge at
VOUT5 regulation point
LDO5 to VOUT5, VOUT5 = 5V
ONx = GND, 7V < V
0 < I
LDO3 = GND
Falling edge of VOUT3, rising edge at
VOUT3 regulation point
LIMx
ILIMx
ILIMx
ILIMx
TON
SKIP
TON
SKIP
TON
TON
TON
TON
LDO5
LDO3
= V
= 5V,
= GND
= 5V
= GND
= 5V
= GND
= V
= V
= 0.5V, GND to PHASEx
= 1V, GND to PHASEx
= 2V, GND to PHASEx
CC
REF
CC
CC
< 100mA
< 100mA
, GND to PHASEx
Test Conditions
5V SMPS
3.3V SMPS
5V SMPS
3.3V SMPS
V
V
V
V
V
V
V
V
LIMx
SKIP
SKIP
SKIP
OUT5
OUT3
OUT5
OUT3
OUT5
OUT3
OUT5
OUT3
= V
IN
IN
= 5V, 0 to 5A
= GND, 0 to 5A
= 2V, 0 to 5A
IN
= 5.05V
= 3.33V
= 5.05V
= 3.33V
= 5.05V
= 3.33V
= 5.05V
= 3.33V
(Note 5)
(Note 5)
< 24V,
CC
< 24V,
<24V
, GND − PHASEx
1.854
0.821
0.876
0.467
4.90
3.95
4.52
3.28
2.82
Min
185
300
25
90
40
90
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0.005
2.060
0.912
1.030
0.546
DS8203-04 March 2011
−0.1
−1.5
−1.7
4.25
4.65
3.35
2.93
Typ
100
100
200
200
300
400
500
400
350
175
1.5
5.0
1.4
50
92
88
84
80
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3
To be continued
2.265
1.003
1.184
0.625
Max
5.10
4.55
4.78
3.42
3.04
110
110
215
500
3.2
60
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Unit
%/V
kHz
mV
mV
mV
mA
mA
ms
μs
ns
%
%
Ω
V
V
V
V
V