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LP5951MFX-1.8/NOPB

IC VREG 1.8 V FIXED POSITIVE LDO REGULATOR, 0.35 V DROPOUT, PDSO5, SOT-23, 5 PIN, Fixed Positive Single Output LDO Regulator

器件类别:电源/电源管理    电源电路   

厂商名称:National Semiconductor(TI )

厂商官网:http://www.ti.com

器件标准:

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器件参数
参数名称
属性值
是否Rohs认证
符合
厂商名称
National Semiconductor(TI )
包装说明
TSSOP, TSOP5/6,.11,37
Reach Compliance Code
compliant
ECCN代码
EAR99
可调性
FIXED
最大回动电压 1
0.35 V
标称回动电压 1
0.2 V
最大绝对输入电压
6.5 V
最大输入电压
5.5 V
最小输入电压
1.8 V
JESD-30 代码
R-PDSO-G5
JESD-609代码
e3
长度
2.92 mm
湿度敏感等级
1
功能数量
1
输出次数
1
端子数量
5
工作温度TJ-Max
125 °C
工作温度TJ-Min
-40 °C
最大输出电流 1
0.15 A
最大输出电压 1
1.836 V
最小输出电压 1
1.764 V
标称输出电压 1
1.8 V
封装主体材料
PLASTIC/EPOXY
封装代码
TSSOP
封装等效代码
TSOP5/6,.11,37
封装形状
RECTANGULAR
封装形式
SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
包装方法
TAPE AND REEL
峰值回流温度(摄氏度)
260
认证状态
Not Qualified
调节器类型
FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
座面最大高度
1.19 mm
表面贴装
YES
技术
CMOS
端子面层
Matte Tin (Sn)
端子形式
GULL WING
端子节距
0.953 mm
端子位置
DUAL
处于峰值回流温度下的最长时间
40
最大电压容差
3.5%
宽度
1.6 mm
文档预览
LP5951 Micropower, 150mA Low-Dropout CMOS Voltage Regulator
May 2007
LP5951
Micropower, 150mA Low-Dropout CMOS Voltage
Regulator
General Description
The LP5951 regulator is designed to meet the requirements
of portable, battery-powered systems providing a regulated
output voltage and low quiescent current. When switched to
shutdown mode via a logic signal at the Enable pin, the power
consumption is reduced to virtually zero.
The LP5951 is designed to be stable with small 1µF ceramic
capacitors.
The LP5951 also features internal protection against short-
circuit currents and over-temperature conditions.
Performance is specified for a -40°C to 125°C temperature
range.
The device is available in SOT23-5 and SC70-5 package.
The device is available in fixed output voltages in the range
of 1.3V to 3.3V. For availability, please contact your local NSC
sales office.
Features
Excellent line transient response: ±2mV typ.
Excellent PSRR: -60dB at 1kHz typ.
Low quiescent current of 29µA typ.
1.8 to 5.5V input voltage range
Small SC70-5 and SOT23-5 packages
Fast turn-on time of 30µs typ.
Typ. < 1nA quiescent current in shutdown
Guaranteed 150mA output current
Output voltage range: 1.3V to 3.3V
Logic controlled enable 0.4V/0.9V
Good load transient response of 50mVpp typ.
Thermal-overload and short-circuit protection
-40°C to +125°C junction temperature range
Applications
General purpose
Typical Application Circuit
20136201
© 2007 National Semiconductor Corporation
201362
www.national.com
LP5951
Connection Diagrams
5-Lead Small Outline Package
SOT23-5 (MF)
5-Lead Small Outline Package
SC70-5 (MG)
20136203
20136202
Top View
See NS Package Number MF05A
Top View
See NS Package Number MAA05A
Pin Descriptions
Pin Number Pin Name
1
2
3
4
5
V
IN
GND
EN
NC
V
OUT
Description
Input Voltage. Input range: 1.8V to 5.5V
Ground
Enable pin logic input: Low = shutdown, High = normal operation. This pin should not be left floating.
No internal connection
Regulated output voltage
Order Information
For 5-Lead Small Outline Package SOT23-5 (MF)
Output Voltage
(V)
1.3
1.5
1.8
2.0
2.5
2.8
3.0
3.3
LP5951 Supplied as 1000 Units,
Tape and Reel
LP5951MF-1.3
LP5951MF-1.3
LP5951MF-1.5
LP5951MF-1.5
LP5951MF-1.8
LP5951MF-1.8
LP5951MF-2.0
LP5951MF-2.0
LP5951MF-2.5
LP5951MF-2.5
LP5951MF-2.8
LP5951MF-2.8
LP5951MF-3.0
LP5951MF-3.0
LP5951MF-3.3
LP5951MF-3.3
LP5951 Supplied as 3000 Units,
Tape and Reel
LP5951MFX-1.3
LP5951MFX-1.3
LP5951MFX-1.5
LP5951MFX-1.5
LP5951MFX-1.8
LP5951MFX-1.8
LP5951MFX-2.0
LP5951MFX-2.0
LP5951MFX-2.5
LP5951MFX-2.5
LP5951MFX-2.8
LP5951MFX-2.8
LP5951MFX-3.0
LP5951MFX-3.0
LP5951MFX-3.3
LP5951MFX-3.3
NOPB
NOPB
NOPB
NOPB
NOPB
NOPB
NOPB
NOPB
Flow
Package
Marking
LKRB
LKRB
LKAB
LKAB
LKBB
LKBB
LKCB
LKCB
LKEB
LKEB
LKFB
LKFB
LKGB
LKGB
LKHB
LKHB
www.national.com
2
LP5951
For 5-Lead Small Outline Package SC70-5 (MG)
Output Voltage
(V)
1.3
1.5
1.8
2.0
2.5
2.8
3.0
3.3
LP5951 Supplied as 1000 Units,
Tape and Reel
LP5951MG-1.3
LP5951MG-1.3
LP5951MG-1.5
LP5951MG-1.5
LP5951MG-1.8
LP5951MG-1.8
LP5951MG-2.0
LP5951MG-2.0
LP5951MG-2.5
LP5951MG-2.5
LP5951MG-2.8
LP5951MG-2.8
LP5951MG-3.0
LP5951MG-3.0
LP5951MG-3.3
LP5951MG-3.3
LP5951 Supplied as 3000 Units,
Tape and Reel
LP5951MGX-1.3
LP5951MGX-1.3
LP5951MGX-1.5
LP5951MGX-1.5
LP5951MGX-1.8
LP5951MGX-1.8
LP5951MGX-2.0
LP5951MGX-2.0
LP5951MGX-2.5
LP5951MGX-2.5
LP5951MGX-2.8
LP5951MGX-2.8
LP5951MGX-3.0
LP5951MGX-3.0
LP5951MGX-3.3
LP5951MGX-3.3
NOPB
NOPB
NOPB
NOPB
NOPB
NOPB
NOPB
NOPB
Flow
Package
Marking
L23
L23
L2B
L2B
L3B
L3B
L4B
L4B
L5B
L5B
L6B
L6B
L7B
L7B
LAB
LAB
Note:
The package marking on the backside of the component designates the date code and a NSC internal code for die traceability. It will vary considerably.
SOT23-5: ZWTT
SC70-5: WTT
with: Z: 1 Digit Assembly Plant Code, W: 1 Digit Date Code, TT: 2 Digit Dierun Code
3
www.national.com
LP5951
Absolute Maximum Ratings
(Notes 2, 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN
pin: Voltage to GND
EN pin: Voltage to GND
Continuous Power Dissipation
(Note 3)
Junction Temperature (T
J-MAX
)
Storage Temperature Range
Package Peak Reflow Temperature
(10-20 sec.)
Package Peak Reflow Temperature
(Pb-free, 10-20 sec.)
ESD Rating(Note 4)
Human Body Model:
Machine Model
-0.3V to 6.5V
-0.3V to (V
IN
+0.3V)
with 6.5V max
Internally Limited
150°C
-65°C to + 150°C
240°C
260°C
2.0kV
200V
Operating Ratings
(Notes 1, 2)
Input Voltage Range (V
IN
)
V
EN
Input Voltage
Junction Temperature (T
J
) Range
Ambient Temperature (T
A
) Range
1.8V to 5.5V
0 to (V
IN
+ 0.3V)
-40°C to + 125°C
(Note 5)
Thermal Properties
Junction-to-Ambient Thermal
Resistance (θ
JA
), (Note 6)
SOT23-5 Package:
SC70-5 Package:
220°C/W
415°C/W
ESD Caution Notice
National Semiconductor recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper
ESD handling techniques can result in damage.
Electrical Characteristics
(Notes 2, 7)
Typical values and limits appearing in standard typeface are for T
A
= 25°C. Limits appearing in
boldface
type apply over the full
operating temperature range: -40°C
T
J
+125°C. Unless otherwise noted, V
IN
= V
OUT(NOM)
+ 1V, C
IN
= 1µF, C
OUT
= 1µF, V
EN
=
0.9V.
Symbol
V
IN
Parameter
Input Voltage
Output Voltage
Tolerance
ΔV
OUT
Line Regulation Error
Load Regulation Error
V
DO
Condition
V
IN
V
OUT(NOM)
+ V
DO
I
OUT
= 1mA
-30°C
T
J
+125°C
V
IN
= V
OUT(NOM)
+ 1V to 5.5V
I
OUT
= 1mA
I
OUT
= 1mA to 150mA
0.1
-0.01
Typ
Min
1.8
-2.0
-3.5
Limit
Max
5.5
2.0
3.5
V
%
%
%/V
%/mA
Units
Output Voltage Dropout I
OUT
= 150mA
(Note 10)
V
OUT
2.5V
V
OUT
< 2.5V
Quiescent Current
V
EN
= 0.9V, I
LOAD
= 0
V
EN
= 0.9V, I
LOAD
= 150mA
V
EN
= 0V
V
IN
= V
OUT(NOM)
+ 1V
Sine modulated V
IN
f = 100Hz
f = 1kHz
f = 10kHz
BW = 10Hz - 100kHz
200
29
33
0.005
400
150
250
350
55
70
1
mV
mV
µA
µA
µA
mA
I
Q
I
SC
PSRR
Output Current
(short circuit)
Power Supply
Rejection Ratio
60
60
50
125
160
20
dB
dB
dB
µV
RMS
°C
°C
E
N
TSD
Output Noise
Thermal Shutdown
Temperature Hysteresis
www.national.com
4
LP5951
Enable Control Characteristics
Symbol
I
EN
V
IL
V
IH
Parameter
Conditions
Typical
Min
Maximum Input Current 0V
V
EN
V
IN
, V
IN
= 5.5V
at V
EN
Input
Low Input Threshold
(shutdown)
High Input Threshold
(enable)
V
IN
= 1.8..5.5V
V
IN
= 1.8..5.5V
0.9
-1
Limit
Max
1
0.4
µA
V
V
Units
Transient Characteristics
Symbol
ΔV
OUT
ΔV
OUT
Parameter
Dynamic Line
Transient
Dynamic Load
Transient
Conditions
V
IN
= V
OUT(NOM)
+ 1V to
V
OUT(NOM)
+ 1V + 0.6V in 30µs, no load
I
OUT
= 0mA to 150mA in 10µs
I
OUT
= 150mA to 0mA in 10µs
I
OUT
= 1mA to 150mA in 1µs
I
OUT
= 150mA to 1mA in 1µs
I
OUT
= 1mA
Typical
Min
±2
-30
20
-50
40
10
30
Limit
Max
mV
mV
mV
mV
mV
mV
µs
Units
ΔV
OUT
T
ON
Overshoot on Startup Nominal conditions
Turn on time
Output Capacitor, Recommended Specification
Symbol
Parameter
Conditions
Capacitance (Note 9)
I
OUT
= 150mA, V
IN
= 5.0V
ESR
Value
Min
C
OUT
Output Capacitance
1.0
0.7
0.003
Limit
(Note 8)
Max
47
0.300
µF
Units
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under which operation
of the device is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions,
see the Electrical Characteristics tables.
Note 2:
All voltages are with respect to the potential at the GND pin.
Note 3:
Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at T
J
= 160°C (typ.) and disengages at T
J
= 140°C (typ.).
Note 4:
The Human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin. The machine model is a 200pF capacitor discharged
directly into each pin. (MIL-STD-883 3015.7)
Note 5:
In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may have to be
derated. Maximum ambient temperature (T
A-MAX
) is dependent on the maximum operating junction temperature (T
J-MAX-OP
= 125°C), the maximum power
dissipation of the device in the application (P
D-MAX
), and the junction-to ambient thermal resistance of the part/package in the application (θ
JA
), as given by the
following equation: T
A-MAX
= T
J-MAX-OP
– (θ
JA
× P
D-MAX
).
Note 6:
Junction-to-ambient thermal resistance is highly application and board-layout dependent. In applications where high maximum power dissipation exists,
special attention must be paid to thermal dissipation issues in board design.
Note 7:
Min and Max limits are guaranteed by design, test, or statistical analysis. Typical numbers are not guaranteed, but do represent the most likely norm.
Note 8:
Min and Max limits are guaranteed by design
Note 9:
The capacitor tolerance should be 30% or better over temperature. The full operating conditions for the application should be considered when selecting
a suitable capacitor to ensure that the minimum value of capacitance is always met. Recommended capacitor type is X7R. However, dependent on application,
X5R, Y5V, and Z5U can also be used. The shown minimum limit represents real minimum capacitance, including all tolerances and must be maintained over
temperature and dc bias voltage (See capacitor section in Applications Hints)
Note 10:
Dropout voltage is defined as the input to output voltage differential at which the output voltage falls to 100mV below the nominal output voltage. This
specification does not apply for output voltages below 1.8V.
5
www.national.com
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