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FAN5090MTC Fiches technique(PDF) 4 Page - Fairchild Semiconductor

No de pièce FAN5090MTC
Description  Two Phase Interleaved Synchronous Buck Converter for VRM 9.x Applications
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Fabricant  FAIRCHILD [Fairchild Semiconductor]
Site Internet  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN5090MTC Fiches technique(HTML) 4 Page - Fairchild Semiconductor

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FAN5090
PRODUCT SPECIFICATION
4
REV. 1.0.1 9/16/03
Electrical Specifications
(VCC = 12V, VID = [01111] = 1.475V, and TA = +25°C using circuit in Figure 2, unless otherwise noted.)
The
• denotes specifications which apply over the full operating temperature range.
Parameter
Conditions
Min.
Typ.
Max.
Units
Input Supply
UVLO Hysteresis
1.0
V
12V UVLO
Rising Edge
8.5
9.5
10.3
V
12V Supply Current
PWM Output Open
15
20
mA
Internal Voltage Regulator
BYPASS Voltage
4.75
5
5.25
V
BYPASS Capacitor
100
nF
VREF and DAC
Output Voltage
See Table 1
1.100
1.850
V
Initial Voltage Setpoint1
ILOAD = 0A, VID = [01111]
1.460
1.475
1.490
V
Output Temperature Drift
TA = 0 to 70°C
5
mV
Line Regulation
VCC = 11.4V to 12.6V
130
µV
Droop2
ILOAD = 69A, RDROOP = 13.3k
56
mV
Programmable Droop Range
0
1.25
m
Response Time
∆Vout = 10mV
100
nsec
Current Mismatch
RDS,on (A) = RDS,on (B),
ILOAD = 69A Droop = 1m
5%
VID Inputs
Input LOW current, VID pins
VVID = 0.4V
-60
µA
VID VIH
2.0
V
VID VIL
0.8
V
Oscillator
Oscillator Frequency
RT = 54.9K
440
500
560
kHz
Oscillator Range
RT = 137K
Ω to 46.4KΩ
200
600
kHz
Maximum Duty Cycle
RT = 137K
90
%
Minimum LDRV on-time
RT = 46.4K
330
nsec
Gate Drive
Gate Drive On-Resistance
HS Source
5
6.5
HS Sink
1.5
2
LS Source
5
6.5
LS Sink
1.5
2
Output Driver
Rise Time
See Figure 1, CL = 3000pF
50
nsec
Fall Time
25
nsec
Enable/Soft Start
Soft Start Current
10
µA
Enable Threshold
ON
OFF
1.0
0.4
V
Power Good
PWRGD Threshold
Logic LOW, VVID – VPWRGD
85
88
92
%VOUT
PWRGD Output Voltage
Isink = 4mA
0.4
V
PWRGD Delay
High
→ Low
500
µsec


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