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UCC39002DR Datasheet(PDF) 4 Page - Texas Instruments

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Part # UCC39002DR
Description  ADVANCED 8-PIN LOAD-SHARE CONTROLLER
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

UCC39002DR Datasheet(HTML) 4 Page - Texas Instruments

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UCC29002
UCC29002/1
UCC39002
SLUS495H − SEPTEMBER 2001 − REVISED AUGUST 2007
4
www.ti.com
electrical characteristics VDD = 12 V, 0°C < TA < 70°C for the UCC39002, −40°C < TA < 105°C for the
UCC29002 and UCC29002/1, TA = TJ (unless otherwise noted) (continued)
error amplifier
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
VOH
High-level output voltage
IOUT_EAO = 0 mA
3.50
3.65
3.80
V
gM
Transconductance
IEAO = ± 50 µA
14
mS
IOH
High-level output current
VLS − VCSO = 0.4 V,REAO = 2.2 kΩ
0.70
0.85
1.00
mA
ADJ buffer
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
VIO
Input offset voltage(2)
VADJ = 1.5 V,
VEAO = 0 V,
−60
mV
ISINK
Sink current
VADJ = 5.0 V,
VEAO= 0 V
0
5
10
µA
TA = 25_C
V
= 5.0 V,
V
= 2.0 V
3.60
3.95
4.30
ISINK
Sink current
0
_C ≤ TA ≤ 70_C
VADJ = 5.0 V,
VEAO= 2.0 V
LS = floating
3.45
3.95
4.45
mA
ISINK
Sink current
−40
_C ≤ TA ≤ 105_C
LS = floating
3.35
3.95
4.55
mA
(1)
Enables the load share bus at start-up.
(2)
Ensured by design. Not production tested.
TERMINAL FUNCTIONS
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
ADJ
5
O
Adjust amplifier output. This is the buffered output of the error amplifier block to adjust output
voltage of the power supply being controlled. This pin must always be connected to a voltage
equal to or greater than VEAO + 1 V.
CS−
1
I
Current sense amplifier inverting input.
CS+
2
I
Current sense amplifier non-inverting input.
CSO
8
O
Current sense amplifier output.
EAO
6
O
Output for load share error amplifier. (Transconductance error amplifier.)
GND
4
Ground. Reference ground and power ground for all device functions. Return the device to the
low current sense− path of the converter.
LS
7
I/O
Load share bus. Output of the load share bus driver amplifier.
VDD
3
I
Power supply providing bias to the device. Bypass with a good quality, low ESL 0.1-
µF to 1-µF,
maximum, capacitor as close to the VDD pin and GND as possible.


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