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參數(shù)資料
| 型號： | CS2843ALN8 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 273K |
| 代理商： | CS2843ALN8 |
CS2842A, CS3842A, CS2843A, CS3843A
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS (continued) (25° ≤ TA ≤ 85° for CS2842A/CS2843A, 0° ≤ TA ≤ 70° for CS3842A/CS3843A.
VCC = 15 V*; RT = 680 Ω, CT = 0.022 μF for triangular mode, RT = 10 kΩ, CT = 3.3 nF for sawtooth mode (see Figure 7);
unless otherwise stated.)
Characteristic
Test Conditions
CS2842A/CS2843A
CS3842A/CS3843A
Unit
Min
Typ
Max
Min
Typ
Max
Error Amp Section
Input Voltage
VCOMP = 2.5 V
2.45
2.50
2.55
2.42
2.50
2.58
V
Input Bias Current
VFB = 0
0.3
1.0
0.3
2.0
μA
AVOL
2.0 ≤ VOUT ≤ 4.0 V
65
90
65
90
dB
Unity Gain Bandwidth
Note 4.
0.7
1.0
0.7
1.0
MHz
PSRR
12 ≤ VCC ≤ 25 V
60
70
60
70
dB
Output Sink Current
VFB = 2.7 V, VCOMP = 1.1 V
2.0
6.0
2.0
6.0
mA
Output Source Current
VFB = 2.3 V, VCOMP = 5.0 V
0.5
0.8
0.5
0.8
mA
VOUT High
VFB = 2.3 V, 15 kΩ to ground
5.0
6.0
5.0
6.0
V
VOUT Low
VFB = 2.7 V, 15 kΩ to VREF
0.7
1.1
0.7
1.1
V
Current Sense Section
Gain
2.85
3.00
3.15
2.85
3.00
3.15
V/V
Maximum Input Signal
0.9
1.0
1.1
0.9
1.0
1.1
V
PSRR
70
70
dB
Input Bias Current
VSENSE = 0
2.0
10
2.0
10
μA
Delay to Output
150
300
150
300
ns
Output Section
Output Low Level
ISINK = 20 mA
ISINK = 200 mA
0.1
1.5
0.4
2.2
0.1
1.5
0.4
2.2
V
Output High Level
ISOURCE = 20 mA
ISOURCE = 200 mA
13
12
13.5
13
12
13.5
V
Rise Time
50
150
50
150
ns
Fall Time
50
150
50
150
ns
Output Leakage
UVLO Active, VOUT = 0
0.01 10.00
0.01 10.00
μA
Total Standby Current
Startup Current
0.5
1.0
0.5
1.0
mA
Operating Supply Current
VFB = VSENSE = 0 V,
RT = 10 kΩ, CT = 3.3 nF
11
17
11
17
mA
VCC Zener Voltage
ICC = 25 mA
34
34
V
4. These parameters, although guaranteed, are not 100% tested in production.
5. Parameters measured at trip point of latch with VFB = 0.
6. Gain defined as: A = ΔVCOMP/ΔVSENSE; 0 ≤ VSENSE ≤ 0.8 V.
*Adjust VCC above the start threshold before setting at 15 V.
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