500mA Low Dropout CMOS Voltage Regulators
DESCRIPTION
The TCS2109 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 2.0V ~ 5.5V. The series is also compatible with low ESR ceramic capacitors which give added output stability. This stability can be maintained even during load fluc-tuations due to the excellent transient response of the series.
FEATURES
Output Voltage Range 2.0V to 5.5V
APPLICATIONS
Mobile phones Cordless phones
Cameras, Video cameras
Portable games Portable AV equipment Reference voltage
Battery powered equipment
The current limiter's foldback 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.
Highly Accurate ± 2%
(selectable in 100mV steps) Dropout Voltage 300mV @ 100mA (3.0V type)
High Ripple Rejection 70dB (10 kHz) Low Power Consumption 70μA (TYP) Standby Current less than 2μA
Internal protector current limiter and short protector
Small packages SOT-25
Maximum Output Current
500mA Pin Configurations
(TOP VIEW)
VIN 23
5
4
1GND CE
NC
VOUT
SOT-25
Pd-Free Package
Temperature Order Part Number
Marking
-40o C to 85 o C
SOT23-5TCS2109_Exx
Quantity/Reel
Order Informatioon
In kind, whichever
3000PCS
TYPICAL APPLICATION CIRCUIT
500mA Low Dropout CMOS Voltage Regulators
BLOCK DIAGRAM
Figure 1
苍茫云海中秋月ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL MAXIMUM RATING UNIT
V IN V SS -0.3～V SS +8Input Voltage V ON/OFF V SS -0.3～V IN +0.3Output Current V OUT V SS -0.3～V IN +0.3
V 250
Power
Dissipation P D
mW Operating Ambient Temperature Topr -40～+85
方差齐性检验Storage Temperature
Tstg -40～+125
浅谈科学
发展与
城市经济管理
°C
Caution : The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.
Electrical Characteristics
PARAMETER
SYMBOL
CONDITION
MIN TYP MAX UNIT CIRCUIT
Output Voltage V OUT(E)V IN =V OUT(S)+1.0 V, I OUT =30
mA
V OUT(S)×0.98V OUT(S)V OUT(S)×1.02 V 1 Output Current I OUT V IN ≥V OUT(S)+1.0 V 450 —mA 1
ds工艺I OUT =50 mA —0.12 0.20 Dropout Voltage
V drop
I OUT =100 mA —0.30 0.45 V
Line Regulations
OUT
IN OUT V V V •∆∆1V OUT(S)+0.5 V ≤V IN ≤8 V
I OUT =30 mA —
0.10
0.2
%/V
Load Regulation 2
OUT V ∆V IN =V OUT(S)+1.0 V 1.0 mA ≤I OUT ≤100 mA —50 100 mV
Output Voltage OUT V ∆V IN =V OUT(S)+1.0 V, I OUT =10
—±100— ppm/℃
1
500
500mA Low Dropout CMOS Voltage Regulators
Characteristics -40°C≤Ta≤85°C
Supply Current I SS1V IN=V OUT(S)+1.0 V —70μA2
Input Voltage V IN—— 2.0—8 V —
Ripple-Rejection |PSRR| V IN=V OUT(S)+1.0 V，f=10 kHz
Vrip=0.5 Vrms, I OUT=50 mA
Short-circuit Current Ishort
V IN=V OUT(S)+1.0 V,V CE on减温减压器
V OUT=gnd
—40—mA 1
CE “High”
Voltage
V CEH 1.6 VIN V 1 CE “Low”
Voltage
V CEL0.25 V 1 CE “High”
Current
I CEH VIN=VCE=VOUT(T)+1.0V -0.1 0.1 uA 2
CE “Low” Current I CEH
VIN= VOUT(T)+1.0V,
VCE=VSS
-0.1 0.1 uA 2
TEST CIRCUITS
1、2、
Application Conditions
Input capacitor (CIN): 1.0µF or more
Output capacitor (CL): 1.0 µF or more (tantalum capacitor)
Caution A general series regulator may oscillate, depending on the external components selected. Check that no oscillation occurs with the application using the above capacitor.
500mA Low Dropout CMOS Voltage Regulators TYPICAL PERFORMANCE CHARACTERISTICS（3.0V output）
1、Out put Voltage vs. Output Current
2、Output Voltage vs. Input Voltage (Contd.)
3、Dropout Voltage vs. Output Current
4、Dropout Voltage vs. Output Voltage
5、Output Voltage vs. Ambient Temperature
6、Ripple Rejection Rate
500mA Low Dropout CMOS Voltage Regulators
7、Transient Response
Input Transient Response Load Transient Response
P A C K A G E I N F O R M A T I O N
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