FAN5234QSCX_NL Fairchild Semiconductor, FAN5234QSCX_NL Datasheet - Page 4

FAN5234QSCX_NL

Manufacturer Part Number
FAN5234QSCX_NL
Description
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of FAN5234QSCX_NL

Dc To Dc Converter Type
Synchronous Buck Controller/PWM DC to DC Controller
Number Of Outputs
1
Pin Count
16
Input Voltage
5 to 24V
Output Voltage
0.9 to 5.5V
Package Type
QSOP
Mounting
Surface Mount
Operating Temperature Classification
Commercial
Operating Temperature (min)
-10C
Operating Temperature (max)
85C
Lead Free Status / Rohs Status
Compliant
PRODUCT SPECIFICATION
Electrical Specifications
4
Parameter
Power Supplies
VCC Current
VIN Current - Sinking
VIN Current - Sourcing
VIN Current - Shut-down
UVLO Threshold
Oscillator
Frequency
Ramp Amplitude, pk–pk
Ramp Amplitude, pk–pk
Ramp Offset
Ramp / VIN Gain
Ramp / VIN Gain
Reference and Soft Start
Internal Reference Voltage
Soft Start current (I
Soft Start Complete Threshold
PWM Converter
Load Regulation
VSEN Bias Current
VOUT pin input impedance
Under-voltage Shutdown
I
Over-voltage threshold
Output Driver
HDRV Output Resistance
LDRV Output Resistance
PGOOD (Power Good Output) and Control pins
Lower Threshold
Upper Threshold
PGOOD Output Low
Leakage Current
Soft Start Voltage when PGOOD
Enabled
EN, FPWM Inputs
Input High
Input Low
SNS
Over-Current threshold
SS
)
Recommended operating conditions, unless otherwise noted.
LDRV, HDRV Open, VSEN forced
above regulation point
Shut-down (EN=0)
VIN pin = input voltage source
VIN pin = GND
Rising VCC
Falling
Hysteresis
VIN > 5V
VIN = 0V
VIN = 16V
VIN < 5V
VIN > 3V
1V < VIN < 3V
at start-up
I
as % of set point. 2 µ S noise filter
R
as % of set point. 2 µ S noise filter
Sourcing
Sinking
Sourcing
Sinking
as % of set point, 2 µ S noise filter
as % of set point, 2 µ S noise filter
I
V
OUT
PGOOD
PULLUP
ILIM
from 0 to 3A, VIN from 2 to 24V
= 68.5K Ω . See Figure 4
= 4mA
= 5V
Conditions
0.891
Min.
255
510
115
113
110
4.3
4.1
0.1
10
50
40
70
86
-1
7
2
Typ.
4.27
4.55
1.25
850
300
600
125
250
144
0.5
0.9
1.5
3.2
1.5
1.5
20
15
80
55
75
5
2
5
8
8
REV. 1.0.10 5/3/04
0.909
Max.
1300
4.75
345
690
120
172
120
115
4.5
0.5
2.4
0.5
0.8
+1
15
30
20
65
80
15
15
92
1
4
1
FAN5234
Units
mV/V
mV/V
KHz
KHz
K Ω
µ A
µ A
µ A
µ A
µ A
µ A
µ A
nA
µA
%
%
%
%
%
V
V
V
V
V
V
V
V
V
V
V
V

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