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参数资料
| 型号： | LP2981 |
| 厂商： | Texas Instruments, Inc. |
| 英文描述： | 100-MA ULTRA DROPOUT REGULATOR WITH SHUTDOWN |
| 中文描述： | 100马超差稳压器具有关断 |
| 文件页数： | 10/20页 |
| 文件大小： | 346K |
| 代理商： | LP2981 |
SLVS521B JULY 2004 REVISED OCTOBER 2004
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
MIN
2.2
MAX
UNIT
VIN
VON/OFF
VIN-VOUT
IOUT
TJ
Minimum VIN of 2.2 V is needed for proper biasing of LDO control circuitry.
Supply input voltage
16
V
ON/OFF input voltage
0
VIN
11
V
Input-output differential
0.7
V
Output current
100
mA
Virtual junction temperature
40
125
°
C
electrical characteristics at specified free-air temperature range, V
IN
= V
OUT(NOM)
+ 1 V,
V
ON/OFF
= 2 V, C
IN
= 1 F, IL = 1 mA, C
OUT
= 4.7 F, ADJ version: ADJ connected to V
OUT
(unless
otherwise noted)
PARAMETER
TEST CONDITIONS
TA
LP2981A-XX
MIN
0.75
LP2981-XX
MIN
1.25
UNIT
TYP
MAX
0.75
TYP
MAX
1.25
Output voltage
(see Note 5)
IL = 1 mA
25
°
C
25
°
C
VOUT
IL = 1 mA to 100 mA
1
1
2
2
%VNOM
tolerance
40
°
C to 125
°
C
25
°
C
40
°
C to 125
°
C
25
°
C
40
°
C to 125
°
C
25
°
C
40
°
C to 125
°
C
25
°
C
40
°
C to 125
°
C
25
°
C
40
°
C to 125
°
C
25
°
C
40
°
C to 125
°
C
25
°
C
40
°
C to 125
°
C
25
°
C
40
°
C to 125
°
C
25
°
C
40
°
C to 125
°
C
25
°
C
40
°
C to 105
°
C
40
°
C to 125
°
C
25
°
C
40
°
C to 125
°
C
25
°
C
40
°
C to 125
°
C
2.5
2.5
3.5
3.5
VOUT/ VIN
Output voltage
line regulation
VIN =
[VOUT(NOM) + 1 V] to 16 V
0.007
0.014
0.007
0.014
%/V
0.032
0.032
IL = 0
1
3
1
3
5
5
IL = 1 mA
7
10
7
10
VIN-VOUT
Dropout
voltage
(see Note 6)
15
15
mV
IL = 25 mA
70
100
70
100
150
150
IL = 100 mA
200
250
200
250
375
375
IL = 0
65
95
65
95
125
125
IL = 1 mA
80
110
80
110
170
170
Ground pin
current
IL = 25 mA
200
300
200
300
IGND
550
550
μ
A
IL = 100 mA
600
800
600
800
1500
1500
VON/OFF
<
0.3 V (OFF)
0.01
0.8
0.01
0.8
VON/OFF 0.15 V (OFF)
0.05
2
0.05
2
5
5
High = O/P ON
1.4
1.4
VON/OFF
ON/OFF input
voltage
(see Note 7)
1.6
1.6
V
Low = O/P OFF
0.5
0.5
0.15
0.15
NOTES:
5. VOUT = VREF for ADJ version
6. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 100 mV below the value measured
with a 1-V differential. This dropout specification does not apply to the 1.8-V option, as the minimum VIN = 2.2 V must be observed
for proper biasing of LDO control circuitry.
7. The ON/OFF input must be actively terminated. Connect to VIN if this function is not used (see Application Information).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LP2981-2.5BUP6 WAF | 制造商:Texas Instruments 功能描述: |
| LP2981-28DBVR | 功能描述:低压差稳压器 - LDO 100-mA 1.25% Tolerance RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| LP2981-28DBVRE4 | 功能描述:低压差稳压器 - LDO 100-mA 1.25% Tolerance RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| LP2981-28DBVRG4 | 功能描述:低压差稳压器 - LDO Sgl Output 100mA Fixed(2.8V) Shutdown RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| LP2981-28DBVT | 功能描述:低压差稳压器 - LDO 100-mA 1.25% Tolerance RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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