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| 型號： | 5962-8951106V2A |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.5 A SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, CQCC20 |
| 封裝： | CERAMIC, LCC-20 |
| 文件頁數(shù)： | 9/13頁 |
| 文件大?。?/td> | 528K |
| 代理商： | 5962-8951106V2A |
www.ti.com............................................................................................................................................................................................... SLUS874 – JANUARY 2009
ELECTRICAL CHARACTERISTICS (continued)
VIN = 20 V, TA = TJ = –55°C to 125°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Error Amplifier Section (VCM = 5.1 V)
Input offset voltage
0.5
5
mV
Input bias current
1
10
A
Input offset current
1
A
DC open loop gain
RL ≥ 10 M
60
75
dB
Gain-bandwidth product (3)
AV = 0 dB, TJ = 25°C
1
2
MHz
Ouput low level
0.2
0.5
V
Output high level
3.8
5.6
V
Common mode rejection
VCM = 1.5 V to 5.2 V
60
75
dB
Supply voltage rejection
VIN = 8 V to 35 V
50
60
dB
PWM Comparator
Minimum duty cycle
0
%
Maximum duty cycle(4)
45
49
%
Input threshold(4)
Zero duty cycle
0.7
0.9
V
Input threshold(4)
Maximum duty cycle
3.3
3.6
V
Input bias current
0.05
A
Shutdown Section
Soft start current
VSHUTDOWN = 0 V, VSOFTSTART = 0 V
25
50
80
A
Soft start low level
VSHUTDOWN = 2.5 V
0.4
0.7
V
Shutdown threshold
To outputs, VSOFTSTART = 5.1 V, TJ = 25°C
0.6
0.8
1
V
Shutdown input current
VSHUTDOWN = 2.5 V
0.4
1
mA
Shutdown delay(3)
VSHUTDOWN = 2.5 V, TJ = 25°C
0.2
0.5
s
Output Drivers (Each OUtput) (VC = 20 V)
ISINK = 20 mA
0.2
0.4
Output low level
V
ISINK = 100 mA
1
2
ISOURCE = 20 mA
18
19
Output high level
V
ISOURCE = 100 mA
17
18
Undervoltage lockout
VCOMP and VSOFTSTART = High
6
7
8
V
Collector leakage
VC = 35 V
200
A
Rise time(3)
CL = 1 nF, TJ = 25°C
100
600
ns
Fall time(3)
CL = 1 nF, TJ = 25°C
50
300
ns
Cross conduction charge
Per cycle, TJ = 25°C
30
nc
Total Standby Current
Supply current
VIN = 35 V
14
20
mA
(3)
Parameters ensured by design and/or characterization, if not production tested.
(4)
Tested at fosc = 40 kHz (RT = 3.6 k, CT = 0.01 F, RD = 0 ).
Approximate oscillator frequency is defined by: f = 1/(CT (0.7 x RT + 3RD)).
Copyright 2009, Texas Instruments Incorporated
5
Product Folder Link(s): UC1525B-SP
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