FAN5240 Datasheet, PDF (6/19 Pages) Fairchild Semiconductor – Multi-Phase PWM Controller for AMD Mobile Athlon TM and Duron TM

FAN5240
Electrical Specifications (continued)
Parameter
PGOOD
VCORE Lower Threshold
PGOOD Output Delay
PGOOD Output Low
Leakage Current
Conditions
Falling Edge
Rising Edge
Low to High, CDELAY = 22nF
IPGOOD = 4mA
VPULLUP = 5V
PRODUCT SPECIFICATION
Min. Typ. Max. Units
800
825
850
mV
850
875
900
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+
30mA
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
C_BOOT
VIN
Q1
HDRV
SW
Q2
LDRV
PGND
L _OUT
VCORE
+
C_OUT
ISNS1 ^RSENSE1
ISNS2 ^RSENSE2
Figure 2. IC Block Diagram
6
REV. 1.1.7 8/29/02