參數(shù)資料
型號(hào): TL499ACP
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: 1 A SWITCHING REGULATOR, 40 kHz SWITCHING FREQ-MAX, PDIP8
封裝: ROHS COMPLIANT, PLASTIC, DIP-8
文件頁數(shù): 7/12頁
文件大小: 358K
代理商: TL499ACP
TL499A
WIDE-RANGE POWER-SUPPLY CONTROLLERS
SLVS029G – JANUARY 1984 – REVISED SEPTEMBER 2001
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
TL499A
L = 50
H
SERIES IN1
SW REG IN2
RCL = 500
OUTPUT
CF = 470 F
RE1
RE2 = 4.7 k
CP = 0.01 F
SERIES IN1
SW REG IN2
REF
SW CURRENT
CTRL
OUTPUT
SW IN
GND (PWR)
GND
+
1
3
8
7
6
5
8
1
2
3
4
Figure 1. TL499A Basic Configuration
Table 1. Maximum Output Current vs Input and Output Voltages
for Step-Up Switching Regulator With RCL = 150
OUTPUT
SWITCHING REGULATOR INPUT VOLTAGE (SW REG IN2)
(V)
OUTPUT
VOLTAGE
1.1
1.2
1.3
1.5
1.7
2
2.5
3
5
6
9
(V)
OUTPUT CURRENT
(mA)
30
65
90
25
50
80
100
20
25
30
80
100
15
20
30
45
55
100
12
10
15
20
25
30
40
55
70
100
10
15
20
25
30
35
45
65
80
100
9
20
25
35
40
50
70
90
100
6
30
35
40
45
55
75
95
100
5
35
40
45
55
70
85
100
Circuit of Figure 1, except:
4.5
35
45
50
60
75
95
100
RCL = 150
3
55
65
75
95
100
CF = 330 F
2.9
60
70
75
100
CP = 0.1 F
The difference between the output and input voltage for these combinations is greater than the minimum
output-to-input differential-voltage specification at 70
°C (1.2 V), but less than the minimum at 85°C (1.9 V).
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