FAN5236 Fairchild Semiconductor, FAN5236 Datasheet - Page 7

• Manufacturer Part Number: FAN5236
• Manufacturer: Fairchild Semiconductor

© 2002 Fairchild Semiconductor Corporation
FAN5236 • Rev. 1.3.2
Electrical Characteristics
Power-Good Output and Control Pins
DDR, EN Inputs
FPWM Inputs
Block Diagram
Symbol
V
V
INH
INL
DDR
VIN
EN
FPWM/VOUT
SS
VSEN
PGOOD
REF2
SS
Lower Threshold
Upper Threshold
PG Output Low
Leakage Current
PG2/REF2OUT Voltage
Input High
Input Low
FPWM Low
FPWM High
Reference and
HYST
Soft Start
Parameter
OSC
CLK
EA
OVP
RAM P
V
REF
S
(Continued)
POR/UVLO
Q
R
CLAMP
CYCLE
DUTY
FPWM/VOUT
% of Set Point, 2µs Noise Filter
% of Set Point, 2µs Noise Filter
IPG = 4mA
V
DDR = 1, 0mA < I
FPWM Connected to Output
PWM
PULLUP
Figure 4. IC Block Diagram
PWM/HYST
DDR
= 5V
RAMP
Σ
Conditions
7
REF2OUT
FPWM
DDR
HYST
PWM
CONTROL LOGIC
IL IM det.
CURRENT PROCESSING
I
OU T
VDD
ADAPTIVE
PWM/HYST
GATE
5V
≤10mA
MO
S / H
V
DD
IL IM
99.00
Min.
108
-86
0.9
2
BOOT
HDRV
SW
LDRV
PGND
ISNS
Typ. Max. Units
Q1
Q2
R
SENSE
V IN
C
1.01
BOOT
116
-94
0.5
0.8
0.1
1
L
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OU T
V
V
µA
REF2
%
%
%
O UT
V
V
V
V
V
C
OUT