FSD200_NL Fairchild Semiconductor, FSD200_NL Datasheet - Page 14

• Manufacturer Part Number: FSD200_NL
• Manufacturer: Fairchild Semiconductor

Specifications of FSD200_NL

• Power Switch Family: FSD200
• Input Voltage: -0.3 to 6.7V
• Power Switch On Resistance: 28Ohm
• Number Of Outputs: Single
• Mounting: Through Hole
• Supply Current: 600uA
• Package Type: PDIP
• Operating Temperature (min): -25C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Pin Count: 7
• Lead Free Status / Rohs Status: Compliant

Typical application circuit
Features
• Non isolation buck converter
• Low component count
• Enhanced system reliability through various protection functions
Key Design Notes
• The output voltage(12V) is regulated with resistors, R1, R2 and R3, zener diode, D3, the transistor, Q1 and the capacitor,
• R, 680K, is to prevent the OLP(over load protection) at startup.
• R, 8.2K, is a dummy resistor to regulate output voltage in light load.
1. Schematic
2. Demo Circuit Part List
C2. While the FSD210 is off diodes, D1 and D2, are on. At this time the output voltage, 12V, can be sensed by the feedback
components above. This output is also used with bias voltage for the FSD210.
VINDC
Non Isolation Buck
GND
Application
4.7uF/400V
Reference
Reference
D1,D2,
D1,D2
Q1
ZD1
U1
C1
UF4004
0
FSD21x
D1
U1
8
Vstr
Part #
Part #
FSD210
1N759A
KSP2222A
UF4007
Output power
Vcc
Vfb
1.2W
R
680K
5
4
Quantity
Quantity
2
1
1
1
1
1
1
47nF/50V
C2
Description
Description
1A/1000V Ultra Fast Diode
1
Ic=200mA, Vcc=40V
12VZD/0.5W
0.5A/700V
Q1
KSP2222A
Universal dc input
(100 ~ 375Vac)
R1 110
Input voltage
110
1N759A
750
R2
D3(ZD)
R3
Requirement/Comment
Requirement/Comment
DO41 Type
DO41 Type
TO-92 Type
DO-35 Type
Iover=0.3A
1000uF 16V
C5
47uF 50V
Output voltage (Max current)
UF4004
L1
1mH
D2
C4
12V (100mA)
R
VOUT(12V/100mA)
8.2K
FSD210, FSD200
GND
14