參數(shù)資料
型號： L4938E
廠商： 意法半導(dǎo)體
英文描述： ADVANCED VOLTAGE REGULATOR
中文描述： 高級穩(wěn)壓器
文件頁數(shù)： 3/12頁
文件大?。?/td> 101K
代理商： L4938E
ELECTRICALCHARACTERISTICS
(V
S
= 14V; T
j
= -40 to 150
°
C unless otherwise specified.)
Symbol
OUT 1
V
O1
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Supply Output Voltage
V
S
= 6to 28V;
I
O1
= 400
μ
A to 100mA
T
j
≤
125
°
C; I
O1
= 50 to 400
μ
A
I
OUT1
= 10mA
I
OUT1
= 100mA; V
S
= 4.8V
I
OUT1
= 1 to 100mA
(after regulation setting)
VOUT1 = 0.8 to 4.5V
I
EN
≥
2.4V (output2 disabled)
I
O1
= 0.1mA; V
SI
> 1.3V
T
J
< 85
°
C; R
PR
= 0
4.9
5
5.1
V
4.8
5
5.2
0.2
0.4
25
V
V
V
V
DP1
Dropoutput Voltage 1
0.1
0.2
V
OL01
Load Regulation 1
mV
V
LIM1
I
QSB
Current Limit 1
Quiescent Current in Standby
Mode
100
200
65
400
90
mA
μ
A
75
μ
A
OUT 2
V
O2
Output Voltage 2
ADJ connected to OUT 2
Dropoutput Voltage 2
Enable = LOW; V
S
= 6 to 28V;
I
02
= 5 to 400mA
I
OUT2
= 100mA
I
OUT2
= 400mA; V
S
= 4.8V
I
OUT1
= 5 to 400mA
(after regulation setting)
4.9
5.1
V
V
DP2
0.2
0.3
0.3
0.6
50
V
V
V
OL02
Load Regulation 2
mV
R
ADJ
I
LIM2
I
Q
Adjust Input Resistance
Current Limit 2
Quiescent Current
60
450
100
650
150
1300
20
mA
mA
mA
V02 = 0.8 to 4.5V
I
OUT1
= 100mA; I
OUT2
= 400mA
OUT1,OUT 2
V
OLi 1,2
Line Regulation
V
S
= 6to 28V; I
O1
= 1mA,
I
O2
= 5mA,
(after regulation setting)
20
mV
PIN FUNCTIONS
PIN
(DIP 12+2+2)
14
15
16
1
2
3
4, 5, 12, 13
PIN
(SO 12+4+4)
18
19
20
1
2
3
4, 5, 6, 7, 14,
15, 16, 17
8
9
10
11
12
13
PIN
PowerSO20
3
4
5
6
7
8
1,10,11,20
Name
Function
VS2
VS1
S1
PR
CT
EN
GND
Supply Voltage (400mA Regulator)
Supply Voltage (100mA Regulator, Reset, Sense)
Sense Input
Reset Theresold Programming
Reset Delay Capacitor
Enable (low will activate the 400mA regulator)
Ground
6
7
8
9
14
15
16
17
18
RES
SO
OUT 1
ADJ
OUT 2
NC
Reset Output
Sense Output
100mA Regulator Output
Feedback of 400mA Regulator
400mA Regulator Output
Not Connected
10
11
2,9,19
THERMAL DATA
Symbol
R
th j-amb
R
th j-case
Parameter
DIP 12+2+2 SO 12+4+4 PowerSO20
40
50
-
-
Unit
°
C/W
°
C/W
Thermal Resistance Junction to ambient
Thermal Resistance Junction to case
-
<2
Note 3: Typical value soldered on a PC board with 8cm
2
copperground plane(35mm thick).
L4938E - L4938ED - L4938EPD
3/12
相關(guān)PDF資料
PDF描述
L4938ED ADVANCED VOLTAGE REGULATOR
L4938EPD ADVANCED VOLTAGE REGULATOR
L4938NPD DUAL MULTIFUNCTION VOLTAGE REGULATOR
L4938N DUAL MULTIFUNCTION VOLTAGE REGULATOR
L4938ND DUAL MULTIFUNCTION VOLTAGE REGULATOR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L4938ED 功能描述:低壓差穩(wěn)壓器 - LDO Dual 5V Very LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
L4938ED013TR 功能描述:低壓差穩(wěn)壓器 - LDO Dual 5V Very LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
L4938EDTR-E 制造商:STMicroelectronics 功能描述:PTS SMARTPOWER - Tape and Reel 制造商:STMicroelectronics 功能描述:Advanced Voltage Reg 3.8V to 4.7V 65uA
L4938EPD 功能描述:低壓差穩(wěn)壓器 - LDO Dual 5V Very LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
L4938EPD13TR 功能描述:低壓差穩(wěn)壓器 - LDO Dual 5V Very LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
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