FAN5353 Fairchild Semiconductor, FAN5353 Datasheet - Page 4

• Manufacturer Part Number: FAN5353
• Description: The FAN5353 is a step-down switching voltage regulator that delivers an adjustable output from an input voltage supply of 2
• Manufacturer: Fairchild Semiconductor

© 2009 Fairchild Semiconductor Corporation
FAN5353 • Rev. 1.0.2
Electrical Characteristics
Minimum and maximum values are at V
T
Power Supplies
Logic Pins
VOUT Regulation
Power Switch and Protection
Frequency Control
Soft-Start
Symbol Parameter
R
R
A
V
V
V
Δ
Δ
Δ
V
V
T
T
I
I
I
V
DS(ON)P
DS(ON)N
= 25°C, V
UVHYST
V
Δ
LIMPK
OUTH
V
I
V
I
LHYST
OUTL
V
SDWN
f
UVLO
V
HYST
SLEW
LOAD
LIMIT
t
I
I
REG
V
SW
REF
SS
SD
IN
OUT
OUT
Q
IH
IL
IN
Quiescent Current
Shutdown Supply Current
Under-Voltage Lockout Threshold
Under-Voltage Lockout Hysteresis
HIGH-Level Input Voltage
LOW-Level Input Voltage
Logic Input Hysteresis Voltage
Input Bias Current
PGOOD Pull-Down Current
PGOOD HIGH Leakage Current
Output Reference DC Accuracy
Measured at FB Pin
V
Load Regulation
Line Regulation
Transient Response
P-channel MOSFET On Resistance
N-channel MOSFET On Resistance
P-MOS Peak Current Limit
Thermal Shutdown
Thermal Shutdown Hysteresis
Input OVP Shutdown
Oscillator Frequency
Regulator Enable to Regulated V
Soft-Start V
IN
OUT
=5V.
DC Accuracy
OUT
Slew Rate
IN
= 2.7V to 5.5V, T
OUT
Conditions
I
EN = GND
V
V
Input tied to GND or V
V
V
T
At VOUT pin W.R.T. Calculated
Value, I
I
2.7V ≤ V
1.5A
I
100ns, V
Rising Threshold
Falling Threshold
R
R
LOAD
OUT(DC)
LOAD
A
IN
IN
PGOOD
PGOOD
LOAD
LOAD
= 25°C
Rising
Falling
A
= 0, V
step 0.1A to 1.5A, t
= -40°C to +85°C, unless otherwise noted. Typical values are at
> 5Ω, to V
> 5Ω, to V
4
= 0.4V
= V
LOAD
= 0 to 3A
IN
OUT
≤ 5.5V, I
IN
OUT
=1.2V
= 500mA
=1.2V
OUT
OUT
OUT(DC)
= 1.2V
= 1.8V
IN
r
= t
=
f
=
0.792
0.788
Min.
1.6%
2.10
1.05
3.75
5.50
2.7
0.800
0.800
–0.03
Typ.
2.83
2.30
0.01
0.01
0.01
4.55
5.85
530
100
+20
150
210
340
0.1
6.2
3.0
14
60
40
20
10
Max.
0.808
0.812
www.fairchildsemi.com
2.95
2.40
1.00
+1.6
5.50
3.0
0.4
3.3
250
420
1
1
Units
MHz
V/ms
%/A
%/V
mΩ
mΩ
mA
mV
mV
mA
mV
μA
μA
μA
°C
°C
%
μs
μs
V
V
V
V
V
V
A
V
V