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參數資料
| 型號： | 5962-8990502EA |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2.2 A SWITCHING CONTROLLER, 1150 kHz SWITCHING FREQ-MAX, CDIP16 |
| 封裝： | CERAMIC, DIP-16 |
| 文件頁數： | 11/18頁 |
| 文件大小： | 477K |
| 代理商： | 5962-8990502EA |
UC1823A,UC2823A, UC2823B,
UC3823A,UC3823B,UC1825A,
UC2825A,UC2825B,UC3825A,UC3825B
SLUS334D AUGUST 1995 REVISED NOVEMBER 2008
www.ti.com
2
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during
storage or handling to prevent electrostatic damage to the MOS gates.
DESCRIPTION (CONTINUED)
Functional improvements have also been implemented in this family. The UC3825 shutdown comparator is now a
high-speed overcurrent comparator with a threshold of 1.2 V. The overcurrent comparator sets a latch that ensures full
discharge of the soft-start capacitor before allowing a restart. While the fault latch is set, the outputs are in the low state.
In the event of continuous faults, the soft-start capacitor is fully charged before discharge to insure that the fault frequency
does not exceed the designed soft start period. The UC3825 CLOCK pin has become CLK/LEB. This pin combines the
functions of clock output and leading edge blanking adjustment and has been buffered for easier interfacing.
The UC3825A and UC3825B have dual alternating outputs and the same pin configuration of the UC3825. The UC3823A
and UC3823B outputs operate in phase with duty cycles from zero to less than 100%. The pin configuration of the UC3823A
and UC3823B is the same as the UC3823 except pin 11 is now an output pin instead of the reference pin to the current
limit comparator. “A” version parts have UVLO thresholds identical to the original UC3823 and UC3825. The “B” versions
have UVLO thresholds of 16 V and 10 V, intended for ease of use in off-line applications.
Consult the application note, The UC3823A,B and UC3825A,B Enhanced Generation of PWM Controllers, (SLUA125) for
detailed technical and applications information.
ORDERING INFORMATION
UVLO
TA
MAXIMUM
DUTY CYCLE
9.2 V / 8.4 V
16 V / 10 V
TA
MAXIMUM
DUTY CYCLE
SOIC16(1)
(DW)
PDIP16
(N)
PLCC20(1)
(Q)
SOIC16
(DW)
PDIP16
(N)
PLCC20(1)
(Q)
40
°C to 85°C
< 100%
UC2823ADW
UC2823AN
UC2823AQ
UC2823BDW
UC2823BN
40
°C to 85°C
< 50%
UC2825ADW
UC2825AN
UC2825AQ
UC2825BDW
UC2825BN
0
°C to 70°C
< 100%
UC3823ADW
UC3823AN
UC3823AQ
UC3823BDW
UC3823BN
0
°C to 70°C
< 50%
UC3825ADW
UC3825AN
UC3825AQ
UC3825BDW
UC3825BN
UC3825BQ
(1) The DW and Q packages are also available taped and reeled. Add TR suffix to the device type (i.e., UC2823ADWR). To order quantities of 1000
devices per reel for the Q package and 2000 devices per reel for the DW package.
UVLO
TA
MAXIMUM
DUTY CYCLE
9.2 V / 8.4 V
TA
MAXIMUM
DUTY CYCLE
CDIP16
(J)
LCCC20
(L)
55
°C to 125°C
< 100%
UC1823AJ, UC1823AJ883B, UC1823AJQMLV
UC1823AL, UC1823AL883B
55
°C to 125°C
< 50%
UC1825AJ, UC1825AJ883B, UC1825AJQMLV
UC1825AL, UC1825AL883B, UC1825ALQMLV
PIN ASSIGNMENTS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
INV
NI
EAOUT
CLK/LEB
RT
CT
RAMP
SS
VREF
VCC
OUTB
VC
PGND
OUTA
GND
ILIM
DW, J, OR N PACKAGES
(TOP VIEW)
3
2
1 20 19
910 11 12 13
4
5
6
7
8
18
17
16
15
14
OUTB
VC
NC
PGND
OUTA
EAOUT
CLK/LEB
NC
RT
CT
Q OR L PACKAGES
(TOP VIEW)
NI
INV
NC
ILIM
GND
VREF
VCC
RAMP
SS
NC
NC = no connection
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