FSDH321LX Fairchild Semiconductor, FSDH321LX Datasheet - Page 2

• Manufacturer Part Number: FSDH321LX
• Manufacturer: Fairchild Semiconductor

Specifications of FSDH321LX

• Power Switch Family: FSDH321
• Power Switch On Resistance: 14Ohm
• Output Current: 2A
• Number Of Outputs: Single
• Mounting: Surface Mount
• Supply Current: 3mA
• Package Type: LSOP
• Operating Temperature (min): -25C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Pin Count: 8
• Power Dissipation: 1.4W
• Lead Free Status / RoHS Status: Supplier Unconfirmed

FSDH321, FSDL321
Internal Block Diagram
2
Vfb
Ipk
3
4
Vovp
I
V
V
DELAY
BURL
SD
Vcc
TSD
V
Vcc
BURH
/V
BURH
Vcc
+
-
I
FB
Start
Soft
2.5R
R
Figure 2. Functional Block Diagram of FSDx321
Normal
Burst
Vcc good
8V/12V
Vcc
Vcc
2
I
BUR(pk)
Modulation
S
R
PWM
Freq.
OSC
Q
Q
Vcc good
S
R
Q
Q
I
CH
AOCP
Vref
Vstr
5
LEB
Internal
Vocp
Bias
driver
Gate
6,7,8
Drain
1
GND