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UC2827DW-1G4 Datasheet(PDF) 3 Page - Texas Instruments

No. de pieza UC2827DW-1G4
Descripción Electrónicos  BUCK CURRENT/VOLTAGE FED PUSH-PULL PWM CONTROLLERS
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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UC2827DW-1G4 Datasheet(HTML) 3 Page - Texas Instruments

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UC2827-1, UC2827-2
UC3827-1, UC3827-2
www.ti.com
SLUS365D
– APRIL 1999 – REVISED APRIL 2011
ABSOLUTE MAXIMUM RATINGS
(1)
UC2827-1
UC2827-2
UNITS
UC3827-1
UC3827-2
Supply voltage, VCC
20
CEAO, CEA+, CEA-, CSAO, CSA+, CSA-, CT, DELAY, PUSH, PULL,
–0.3 to 5
RAMP, RT, SS, SYNC, VEA+, VEAO,
V
Input voltage range
V+ and BUCK
90
SRC
90-VCC
I/O continuous
±250
mA
BUCK driver
I/O peak
±1
A
I/O continuous
±200
mA
PUSH/PULL driver
I/O peak
±0.8
A
Storage temperature
–65 to 150
Junction temperature
–55 to 150
°C
Lead temperature (soldering, 10 sec)
300
(1)
Voltages are referenced to ground. Currents are positive into, negative out of the specified terminal. Consult Packaging section of
databook for thermal limitations and considerations of packages.
ELECTRICAL CHARACTERISTICS
Unless otherwise spsecified, VVCC = 15 V, VV+ = 14.3 V, CCT = 340 pF, RRT = 10 kΩ, RDELAY = 24.3 kΩ, VSRC = VGND = VBUCK=
VPUSH = VPULL outputs no load, TJ = TA
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY
VCC UVLO, Turn-on
8.3
8.8
9.5
V
Hysteresis
0.9
1.2
1.5
V
IVCC
Supply current start
VVCC = 8 V
1000
µA
IVCC
Supply current run
32
45
mA
IV+ buck high
0.2
1
2
mA
VOLTAGE ERROR AMPLIFIER
IB
0.5
3
µA
VIO
10
mV
AVOL
80
95
dB
GBW(1)
Gain bandwidth
1
4
MHz
VOL
Low-level output voltage
IVEAO = 0 µA (No load)
0.3
0.5
V
VOH
High-level output voltage
IVEAO = 0 µA (No load)
2.85
3
3.20
V
CURRENT SENSE AMPLIFIER
IB
–1
–5
µA
VIO
5
mV
AVOL
80
110
dB
GBW (1)
Gain bandwidth
15
29
MHz
VOL
Low-level output voltage
ICEAO = 0 µA (No load)
0.25
0.5
V
VOH
High-level output voltage
ICEAO = 0 µA (No load)
3
3.3
V
CMRR
Common mode range(1)
-0.3
2
V
(1)
Ensured by design. Not production tested.
Copyright
© 1999–2011, Texas Instruments Incorporated
3


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