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FAN5099 датащи(PDF) 6 Page - Fairchild Semiconductor

номер детали FAN5099
подробное описание детали  Wide Frequency Synchronous Buck PW & LDO Controller
Download  24 Pages
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производитель  FAIRCHILD [Fairchild Semiconductor]
домашняя страница  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN5099 датащи(HTML) 6 Page - Fairchild Semiconductor

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© 2006 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN5099 Rev. 1.1.5
6
Electrical Characteristics (Continued)
Notes:
2. All limits at operating temperature extremes are guaranteed by design, characterization, and statistical quality control.
3. AC specifications guaranteed by design/characterization (not production tested).
4. For a case when VCC is higher than the typical 5V VCC, voltage observed at VCC pin when the internal shunt regulator
is sinking current to keep voltage on VCC pin constant.
5. Test Conditions: VLDO_IN = 1.5V and VLDO_OUT = 1.2V.
Unless otherwise noted, VCC = 5V, TA = 25°C, using the circuit in Figure 1. The ‘’ denotes that the specifications apply
to the full ambient operating temperature range.(2, 3)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
Error Amplifier
DC Gain
80
dB
GBWP
Gain-BW Product
25
MHz
S/R
Slew Rate
10pF across COMP to GND
8
V/
μS
Output Voltage Swing
No Load
0.5
4.0
V
IFB
FB Pin Source Current
μA
Gate Drive
RHUP
HDRV Pull-up Resistor
Sourcing
1.8
3.0
Ω
RHDN
HDRV Pull-down Resistor
Sinking
1.8
3.0
Ω
RLUP
LDRV Pull-up Resistor
Sourcing
1.8
3.0
Ω
RLDN
LDRV Pull-down Resistor
Sinking
1.2
2.0
Ω
Protection/Disable
ILIM
ILIMIT Source Current
9
10
11
μA
ISWPD
SW Pull-down Current
SW = 1V, EN = 0V
mA
VUV
Under-Voltage Threshold
As % of set point;
2
μS noise filter
65
75
80
%
VOV
Over-Voltage Threshold
As % of set point;
2
μS noise filter
110
115
120
%
Supply Current
TSD
Thermal Shutdown
160
°C
VEN
Enable Threshold Voltage
Enable Condition
2.0
V
Disable Condition
0.8
V
Enable Source Current
VCC = 5V
50
μA
Enable Sink Current
VCC = 5V and fault conditions
(overload, short-circuit,
over-voltage, under-voltage)
10
μA
Low Drop-Out (LDO)(5)
VLDOREF
Reference Voltage
(measured at FBLDO pin)
TA = 0°C to 70°C
775
800
825
mV
TA = -40°C to 85°C
770
800
830
mV
Regulation
0A
≤ I
LOAD ≤ 5A
1.17
1.20
1.23
V
VLDO_DO Drop-out Voltage
ILOAD ≤ 5A and RDS-ON < 50mΩ
0.3
V
External Gate Drive
VCC = 4.75V
4.5
V
VCC = 5.6V
5.3
V
Gate Drive Source Current
1.2
mA
Gate Drive Sink Current
400
μA


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