FAN5240 Просмотр технического описания (PDF) - Fairchild Semiconductor
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FAN5240 Datasheet PDF : 19 Pages
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Electrical Specifications (Continued)
Parameter
PGOOD
VCORE Lower Threshold
PGOOD Output Delay
PGOOD Output Low
Leakage Current
Note:
1. Guaranteed by slew rate testing.
Conditions
Falling Edge
Rising Edge
Low to High, CDELAY = 22nF
IPGOOD = 4mA
VPULLUP = 5V
Min. Typ. Max. Units
785
825
865
mV
835
875
915
mV
12
mS
0.5
V
1
µA
5V
VDD
EN
POR/UVLO
SS
PGOOD
VOUT'
HYST
DAC
Soft Start &
OVP
HYST
FPWM
VDD
VIN
ISNS1+ISNS2
5
VCORE+
30µA
VCORE-
OSC
RAMP CLK
EA1
DUTY
CYCLE
CLAMP
Q
SR
PWM
ISNS1-ISNS2
PWM
S/H
PWM/HYST
ILIM MODE
A
det.
CURRENT
PROCESSING
ISNS1 ISNS2
A2
A1
VOUT'
ILIM
B
ISNS2-ISNS1
TO PH 2
MODULATOR
1K R6
BOOT
CBOOT
VIN
Q1
HDRV
SW
Q2
LDRV
PGND
L OUT
VCORE
+
COUT
ISNS1 RSENSE1
ISNS2 RSENSE2
Figure 2. IC Block Diagram
6
www.fairchildsemi.com
FAN5240 Rev. 1.2.0
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