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LN1134 Schematic ( PDF Datasheet ) - Natlinear

Teilenummer LN1134
Beschreibung High Speed Low Dropout Middle Current Voltage Regulators
Hersteller Natlinear
Logo Natlinear Logo 




Gesamt 11 Seiten
LN1134 Datasheet, Funktion
LN1134
High Speed Low Dropout Middle Current Voltage Regulators
General Description
The LN1134 series are highly precise, low noise, positive
voltage LDO regulators manufactured using CMOS
processes. The series achieves high ripple rejection and
low dropout and consists of a standard voltage source, an
error correction, current limiter and a phase compensation
circuit plus a driver transistor. Output voltage is selectable
in 100mV increments within a range of 1.5V ~ 5.0V. The
series is also compatible with low ESR ceramic capacitors
which give added output stability. This stability can be
maintained even during load fluctuations due to the
excellent transient response of the series.
The current limiter's feedback circuit also operates as a
short protect for the output current limiter and the output
pin The CE function enables the output to be turned off,
resulting in greatly reduced power consumption.
Features
Output Voltage Range: 1.0V to 5.0V (selectable in
100mV steps)
Highly Accurate: ± 2%
Dropout Voltage: 300mV @ 100mA (3.0V type)
Ordering Information
LN1134 ①②③④⑤⑥
High Ripple Rejection: 70dB (10 kHz)
Low Power Consumption: 70μA (TYP.)
Maximum Output Current : 300mA
Standby Current : less than 2μA
Internal protector: current limiter and short protector
Applications
Mobile phones
Cordless phones
Cameras, Video cameras
Portable games
Portable AV equipment
Reference voltage
Battery powered equipment
Package
SOT-23-5L
DFNWB1.8×2-6L
SOT-353/SC70-5
SOT-343
Designator
②③
Symbol
A
B
C
D
10-60
2
A
Description
CE Pin Logic :
Active 'High' (pull-down resistor built in)
Active 'High' (no pull-down resistor built
in)
Active 'Low' (pull-up resistor built in)
Active 'Low' (no pull-up resistor built in)
Output Voltage:
e.g. 20 = 2.0V 30 = 3.0V etc.
Output Voltage : 100mV increments
e.g. =3, =8, =2 3.8V
Output Voltage : 50mV increments
e.g. =3, =8, =A 3.85V
Designator
Symbol
M
Description
Package Type :
SOT-23-5L
K SOT-353/SC70-5
C SOT-343
D DFNWB1.8×2-6L
Device Orientation :
Embossed Tape :
R
Standard Feed
Embossed Tape :
L
Reverse Feed
Rev.1.0 — Aug. 14, 2012
1
www.natlinear.com
Free Datasheet http://www.nDatasheet.com






LN1134 Datasheet, Funktion
Electrical Characteristics
LN1134
Parameter
Output Voltage
Output Current
Dropout Voltage
Line Regulations
Load Regulation
Output Voltage
Temperature
Characteristics
Supply Current
Input Voltage
Ripple-Rejection
Short-circuit
Current
CE “High” Voltage
CE “Low” Voltage
CE “High”
Current
CE “Low” Current
Symbol
VOUT(E)
IOUT
Vdrop
VOUT1
VIN VOUT
VOUT 2
VOUT
Ta VOUT
ISS1
VIN
|PSRR|
Ishort
VCEH
VCEL
ICEH
ICEH
Condition
VIN =VOUT(S)+1.0 V, IOUT=30
mA
VIN≥VOUT(S)+1.0 V
Min
VOUT(S)
×0.98
300
Typ Max
VOUT(S)
VOUT(S)
×1.02
——
Unit
V
mA
Circuit
1
1
IOUT=50 mA
IOUT=100 mA
— 0.12 0.20
V
— 0.30 0.45
VOUT(S)+0.5 V ≤VIN≤8 V
IOUT=30 mA
VIN=VOUT(S)+1.0 V
1.0 mA ≤IOUT ≤100 mA
— 0.10 0.2 %/V
— 50 100 mV
1
VIN=VOUT(S)+1.0 V, IOUT=10
mA — ±100 — ppm/
-40°C Ta ≤85°C
VIN=VOUT(S)+1.0 V
— 70
μA 2
——
VIN=VOUT(S)+1.0 Vf=10 kHz
Vrip=0.5 Vrms, IOUT=50 mA
VIN=VOUT(S)+1.0 V,VCE on
VOUT=gnd
2.0
1.6
—8
V
70 — dB
40 — mA
VIN V
1
1
1
0.25 V
1
VIN=VCE=VOUT(T)+1.0V
VIN= VOUT(T)+1.0V,
VCE=VSS
-0.1
-0.1
0.1 uA
0.1 uA
2
2
Rev.1.0 — Aug. 14, 2012
6
www.natlinear.com
Free Datasheet http://www.nDatasheet.com

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