FSBH0F70A Fairchild Semiconductor, FSBH0F70A Datasheet - Page 4

• Manufacturer Part Number: FSBH0F70A
• Description: Fsbh0f70a, Fsbh0170/a, Fsbh0270/a, Fsbh0370 Green Mode Fairchild Power Switch Fps?
• Manufacturer: Fairchild Semiconductor

© 2009 Fairchild Semiconductor Corporation
FSBH0F70A, FSBH0170/A, FSBH0270/A, FSBH0370 • Rev. 1.0.0
Pin Configuration
Pin Definitions
6, 7, 8
Pin #
1
2
3
4
5
8
1
8
1
8
1
BH0F70A
BH0270A
BH0270
ZXYTT
ZXYTT
ZXYTT
Name
TPM
TPM
TPM
Drain
GND
VDD
VIN
NC
HV
FB
Description
Ground. SenseFET source terminal on primary side and internal controller ground.
Power Supply. The internal protection circuit disables PWM output as long as V
OVP trigger point.
Feedback. The signal from the external compensation circuit is fed into this pin. The PWM duty
cycle is determined in response to the signal on this pin and the internal current-sense signal.
Line-Voltage Detection. The line-voltage detection is used for brownout protection with
hysteresis and constant output power limit over a universal AC input range. This pin has
additional protections that pull HIGH for latch and pull LOW for auto recovery, which depends on
the application.
NC Pin for FSBH0F70A, FSBH0170A, and FSBH0270A.
Startup. For startup, this pin is pulled HIGH to the line input or bulk capacitor via resistors.
SenseFET Drain. High-voltage power SenseFET drain connection.
8
1
8
1
8
1
BH0170A
BH0170
BH0370
ZXYTT
ZXYTT
ZXYTT
TPM
TPM
TPM
Figure 4. Pin Configuration
4
F
Z
X
Y
TT
T
P
M
– Fairchild Logo
– Plant Code
– Package Type (N:DIP)
– 1-Digit Year Code
– 1-Digit Week Code
– Y= Green Package
– Manufacture Flow Code
– 2-Digit Die Run Code
DD
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