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參數(shù)資料
| 型號(hào)： | 5962-8670409VPA |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, CDIP8 |
| 封裝： | CERAMIC, DIP-8 |
| 文件頁數(shù)： | 5/11頁 |
| 文件大小： | 577K |
| 代理商： | 5962-8670409VPA |
www.ti.com............................................................................................................................................................................................... SLUS872 – JANUARY 2009
ELECTRICAL CHARACTERISTICS (continued)
VCC = 15 V, RT = 10 k, CT = 3.3 nF, TA = TJ = –55°C to 125°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Error Amp Section
Input voltage
VComp = 2.5 V
2.45
2.50
2.55
mV
Input bias current
–0.3
–1
A
Open-loop voltage gain
VO = 2 V to 4 V
65
90
dB
Unity-gain bandwidth
TJ = 25°C
(2)
0.7
1
MHz
PSRR
VCC = 12 V to 25 V
60
70
dB
Output sink current
VFB = 2.7 V, VComp = 1.1 V
2
6
mA
Output source current
VFB = 2.3 V, VComp = 5 V
–0.5
–0.8
mA
High-level output voltage
VFB = 2.3 V, RL = 15 k to ground
5
6
V
Low-level output voltage
VFB = 2.7 V, RL = 15 k to VREF
0.7
1.1
V
Current Sense Section
Gain(3)(4)
2.85
3
3.15
V/V
Maximum input signal
VComp = 5 V
(3)
0.9
1
1.1
V
PSRR
VCC = 12 V to 25 V
(3)
70
dB
Input bias current
–2
–10
A
Delay to output
VISENSE = 0 to 2 V
(2)
150
300
ns
Output Section
ISINK = 20 mA
0.1
0.4
V
Output low-level voltage
ISINK = 200 mA
1.5
2.2
V
ISOURCE = 20 mA
13
13.5
V
Output high-level voltage
ISOURCE = 200 mA
12
13.0
V
Rise time
CL = 1 nF, TJ = 25°C
(2)
50
150
ns
Fall time
CL = 1 nF, TJ = 25°C
(2)
50
150
ns
UVLO saturation
VCC = 5 V, ISINK = 10 mA
0.7
1.2
V
Undervoltage Lockout Section
Start threshold
7.8
8.4
9
V
Minimum operation voltage after turn-on
7
7.6
8.2
V
PWM Section
Maximum duty cycle
94
96
100
%
Minimum duty cycle
0
%
Total Standby Current
Start-up current
0.3
0.5
mA
Operating supply current
VFB = VISENSE = 0 V
11
17
mA
VCC zener voltage
ICC = 25 mA
30
34
V
(2)
Parameters ensured by design and/or characterization, if not production tested.
(3)
Parameter measured at trip point of latch with VFB = 0 V.
(4)
Gain defined as: G =
ΔVComp/ΔVISENSE; VISENSE = 0 to 0.8 V.
Copyright 2009, Texas Instruments Incorporated
3
Product Folder Link(s): UC1843A-SP
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