FAN5230QSC Fairchild Semiconductor, FAN5230QSC Datasheet - Page 12

• Manufacturer Part Number: FAN5230QSC
• Description: IC CTRLR PWM MOBILE PC 24QSOP
• Manufacturer: Fairchild Semiconductor

Specifications of FAN5230QSC

• Applications: Converter, Mobile PCs
• Voltage - Input: 5.4 ~ 24 V
• Number Of Outputs: 5
• Voltage - Output: 3.3V, 5V, 12V, Adjustable
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-QSOP
• Output Voltage: 3.3 V, 5 V, 12 V
• Input Voltage: 5.4 V to 24 V
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 20 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: FAN5230QSC_NL; FAN5230QSC_NL

FAN5230
Error Amplifier output voltage clamp
Thermal shutdown
12
Generic Mobile System Block Diagram
°
Vclamp=0.5V+
+Vo/8 +/-0.2V
VFB=0.5V+Vo/8
VREF
SDN5
SDN3.3
PGOOD
Figure 6. Duty-Cycle Clamp
–
EA
+
P CODE EXECUTION
RC5230
2 Cycles
Counter
0.4V
SDWN
V RAMP =0.5V+Vin/8
5V
3.3V
5V-Always
3.3V-Always
Figure 7. System Block Diagram
–
+
PGOOD
EN
8051
C
C
Vin=5.6 to 24V
Input UVLO
IC Protections Table
OC/UV
(Bucks)
OC/UV
(LDO)
OV (Buck)*
OV (Boost)
SDWN=0
OT
UV (Boost)
OC (Boost)
SDWN
RC5231
OFF-LATCH OFF-LATCH
OFF-LATCH OFF-LATCH
HSD
Buck
Vcpu
1.5V
2.5V
OFF
OFF
OFF
ON
ON
"
RESET
LOGIC
Clock
CROWBAR
LSD
Buck
P
SOFT
OFF
OFF
ON
ON
"
PGOOD
CPU
CPU
OFF-LATCH
REV. 2.8.5 10/17/01
LDO
OFF
OFF
ON
ON
ON
ON
ON
OFF-LATCH
OFF-LATCH
LSD
Boost
33% DC
OFF
OFF
OFF
ON
"