參數(shù)資料
型號： IP3845A
廠商： SEMELAB LTD
元件分類： 穩(wěn)壓器
英文描述： CURRENT MODE REGULATING PULSE WIDTH MODULATORS
中文描述： 0.2 A SWITCHING REGULATOR, PDSO14
封裝： SOIC-14
文件頁數(shù)： 4/6頁
文件大?。?/td> 60K
代理商： IP3845A
LAB
SEME
IP1844A SERIES
IP1845A SERIES
Semelab plc.
Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612.
Prelim. 2/95
IP1844A , IP1845A
IP2844A , IP2845A
Min.
Typ.
IP3844A
IP3845A
Typ.
Parameter
Test Conditions
1
CURRENT SENSE SECTION
Max.
Min.
Max.
Units
2.85
0.9
3
1
3.15
1.1
60
70
–2
150
–10
300
0.1
1.5
13.5
13.5
50
50
0.7
0.4
2.2
13
12
150
150
1.1
14.5
7.8
8.5
7
16
8.4
10
7.6
17.5
9
11.5
8.2
0.3
11
14
34
0.5
15
17
40
30
46
48
50
0
2.85
0.9
3
1
3.15
1.1
60
70
–2
150
–10
300
0.1
1.5
13.5
13.5
50
50
0.7
0.4
2.2
13
12
150
150
1.1
15
7.8
9
7
16
8.4
10
7.6
17
9
11
8.2
0.3
11
14
34
0.5
15
17
40
30
47
48
50
0
Gain
Maximum Input Signal
Supply Voltage
Rejection
Input Bias Current
Delay to Output
Output Low Level
Output High Level
Rise Time
Fall Time
UVLO Saturation
Upper Threshold
(V
CC
)
Lower Threshold
(V
CC
)
Start–up Current
Operating Supply
Current
V
CC
Zener Voltage
Maximum Duty Cycle
Minimum Duty Cycle
See Notes 2,3
V
PIN1
= 5V
(Note 2)
V
C
= 12V to 25V
I
SINK
= 20mA
I
SINK
= 200mA
I
SOURCE
= 20mA
I
SOURCE
= 200mA
C
L
= 1nF
C
L
= 1nF
V
CC
= 6V
UNDER–VOLTAGE LOCKOUT SECTION
I
L
= 1mA
IP1844A Series
IP1845A Series
IP1844A Series
IP1845A Series
V
PIN2
= 0V
V
PIN3
= 0V
I
CC
= 25mA
PWM SECTION
IP1844A Series
IP1845A Series
V/V
V
dB
μ
A
ns
V
V
ns
V
V
V
mA
mA
V
%
NOTES
ELECTRICAL CHARACTERISTICS
(Over Full Operating Temperature Range unless otherwise stated)
OUTPUT SECTION
TOTAL STANDBY CURRENT
1. Test Conditions unless otherwise stated:
V
CC
= 15V* , R
T
= 10k
, C
T
= 3.3nF , f = 52kHz.
*Adjust V
CC
above start threshold before setting at
required level.
All specifications apply over the full operating temperature
range unless otherwise stated.
(See Ordering Information for further details).
2. Parameter measured at trip point of latch with
V
PIN2
= 0V
3. Gain defined as:
A =
V
PIN3
0
≤
V
PIN3
≤
0.8
V
PIN1
相關(guān)PDF資料
PDF描述
IP1845A RESISTOR-METAL FILM
IP3845AN Current Mode Regulating Pulse Width Modulator
IP2844A CURRENT MODE REGULATING PULSE WIDTH MODULATORS
IP2845A CURRENT MODE REGULATING PULSE WIDTH MODULATORS
IP1844 CURRENT MODE REGULATING PULSE WIDTH MODULATORS
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