FAN5355 Fairchild Semiconductor, FAN5355 Datasheet - Page 5

• Manufacturer Part Number: FAN5355
• Description: The FAN5355 device is a high-frequency, ultra-fast transient response, synchronous step-down DC-DC converter optimized for low-power applications using small, low-cost inductors and capacitors
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
FAN5355 • Rev. 1.1.0
Electrical Specifications
V
noted. Typical values are at T
Power Supplies
ENABLE, VSEL, SDA, SCL, SYNC
Power Switch and Protection
Frequency Control
Symbol Parameter
R
R
IN
V
V
D
T
I
T
DS(ON)P
DS(ON)N
I
f
UVHYST
I
R
LIMPK
LKGN
SYNC
= 3.6V, EN = V
LKGP
V
V
f
I
UVLO
V
HYST
LIMIT
SYNC
I
I
SW
SD
IN
DIS
Q
IN
IH
IL
Input Voltage Range
Quiescent Current
Shutdown Supply Current
Under-Voltage Lockout Threshold
Under-Voltage Lockout Hysteresis
HIGH-Level Input Voltage
LOW-Level Input Voltage
Input Bias Current
P-Channel MOSFET On
Resistance
P-Channel Leakage Current
N-Channel MOSFET On
Resistance
N-Channel Leakage Current
Discharge Resistor for Power-
Down Sequence
P-MOS Current Limit
Thermal Shutdown
Thermal Shutdown Hysteresis
Oscillator Frequency
Synchronization Range
Synchronization Duty Cycle
IN
, VSEL = V
A
= 25°C. Circuit and components according to Figure 1.
IN
, SYNC = GND, VSEL0(6) bit = 1, CONTROL2[4:3] = 00. T
Conditions
I
I
EN = GND
EN = V
SDA = SCL = V
V
V
Input tied to GND or V
V
V
V
V
V
V
V
V
Options 03 and 06
2.7V ≤ V
2.7V ≤ V
2.7V ≤ V
2.7V ≤ V
2.7V ≤ V
O
O
IN
IN
IN
IN
IN
DS
IN
IN
IN
DS
= 0mA, PFM Mode
= 0mA, 3MHz PWM Mode
Rising
Falling
= 3.6V, CSP Package
= 3.6V, MLP Package
= 2.7V, MLP Package
= 3.6V, CSP Package
= 3.6V, MLP Package
= 2.7V, MLP Package
= 6V
= 6V
IN
IN
IN
IN
IN
IN
, EN_DCDC bit = 0,
≤ 4.2V, Options 00 and 02
≤ 5.5V, Options 00 and 02
≤ 4.2V, Options 03 and 06
≤ 5.5V, Options 03 and 06
≤ 4.5V, Option 08
5
IN
IN
Min.
1150
1050
1350
1250
1400
A
2.65
2.00
200
2.7
1.2
2.7
20
= -40°C to +85°C, unless otherwise
Continued on the following page…
Typ.
1350
1350
1550
1550
1650
2.40
2.15
0.01
3.00
250
145
165
200
101
150
4.8
0.1
0.1
3.0
37
75
95
60
20
Max.
1600
1600
1800
1800
2.60
2.30
1.00
3.35
www.fairchildsemi.com
300
120
5.5
2.0
2.0
0.4
3.3
50
80
1
1
Units
MHz
MHz
mA
mΩ
mΩ
mA
mV
A
A
A
A
A
°C
°C
%
V
V
V
V
Ω
V