NCP4589
300 mA, Tri-Mode, LDO
Linear Voltage Regulator
The NCP4589 is a CMOS 300 mA LDO which switches to a low
power mode under light current loads. The device automatically
switches back to a fast response mode as the output load increases
above 3 mA (typ.). The device can be placed in permanent fast mode
through a mode select pin. The family is available in a variety of
packages: SC−70, SOT23 and a small, ultra thin 1.2 x 1.2 x 0.4 mm
XDFN.
Features
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MARKING
DIAGRAMS
XXX
XMM
•
Operating Input Voltage Range: 1.4 V to 5.25 V
•
Output Voltage Range: 0.8 to 4.0 V (available in 0.1 V steps)
•
Supply Current: Low Power Mode – 1.0
mA
at V
OUT
< 1.85 V
•
•
•
•
•
•
•
•
SC−70
CASE 419A
Fast Mode – 55
mA
Standby Mode – 0.1
mA
Dropout Voltage: 230 mV Typ. at I
OUT
= 300 mA, V
OUT
= 2.8 V
±1%
Output Voltage Accuracy (V
OUT
> 2 V, T
J
= 25
°C)
High PSRR: 70 dB at 1 kHz (Fast response mode)
Line Regulation 0.02%/V Typ.
Current Fold Back Protection
Stable with Ceramic Capacitors
Available in 1.2x1.2 XDFN, SC−70 and SOT23 Package
These are Pb−free Devices
XDFN6
CASE 711AA
XX
MM
XXXMM
SOT−23−5
CASE 1212
XXXX
MM
1
Typical Applications
•
Battery Powered Equipments
•
Portable Communication Equipments
•
Cameras, Image Sensors and Camcorders
VIN
C1
1m
NCP4589
VIN
CE
AE
GND
VOUT
C2
1m
VOUT
= Specific Device Code
= Date Code
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 27 of this data sheet.
Figure 1. Typical Application Schematic
©
Semiconductor Components Industries, LLC, 2012
February, 2012
−
Rev. 1
1
Publication Order Number:
NCP4589/D
NCP4589
AE
AE
Vin
Vout
Vin
Vout
Vref
Vref
Current Limit
Current Limit
GND
CE
CE
GND
NCP4589Hxxxx
NCP4589Dxxxx
Figure 2. Simplified Schematic Block Diagram
PIN FUNCTION DESCRIPTION
Pin No.
XDFN
4
2
3
6
1
5
Pin No.
SC−70
4
2
5
3
1
−
Pin No.
SOT23
1
2
3
5
4
−
Pin Name
VIN
GND
CE
VOUT
AE
NC
Input pin
Ground
Chip enable pin
Output pin
Auto Eco Pin
No connection
Description
ABSOLUTE MAXIMUM RATINGS
Rating
Input Voltage (Note 1)
Output Voltage
Chip Enable Input
Auto Eco Input
Output Current
Power Dissipation XDFN
Power Dissipation SC70
Power Dissipation SOT23
Junction Temperature
Storage Temperature
Operation Temperature
ESD Capability, Human Body Model (Note 2)
ESD Capability, Machine Model (Note 2)
T
J
T
STG
T
A
ESD
HBM
ESD
M
M
Symbol
V
IN
V
OUT
V
CE
V
AE
I
OUT
P
D
Value
6.0
−0.3
to V
IN
+ 0.3
−0.3
to 6.0
−0.3
to 6.0
400
400
380
420
−40
to 150
−55
to 125
−40
to 85
2000
200
°C
°C
°C
V
V
Unit
V
V
V
V
mA
mW
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. Refer to ELECTRICAL CHARACTERISTIS and APPLICATION INFORMATION for Safe Operating Area.
2. This device series incorporates ESD protection and is tested by the following methods:
ESD Human Body Model tested per AEC−Q100−002 (EIA/JESD22−A114)
ESD Machine Model tested per AEC−Q100−003 (EIA/JESD22−A115)
Latchup Current Maximum Rating tested per JEDEC standard: JESD78.
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2
NCP4589
THERMAL CHARACTERISTICS
Rating
Thermal Characteristics, XDFN
Thermal Resistance, Junction−to−Air
Thermal Characteristics, SOT23
Thermal Resistance, Junction−to−Air
Thermal Characteristics, SC−70
Thermal Resistance, Junction−to−Air
Symbol
R
qJA
R
qJA
R
qJA
Value
250
238
263
Unit
°C/W
°C/W
°C/W
ELECTRICAL CHARACTERISTICS
−40°C
≤
T
A
≤
85°C; V
IN
= V
OUT(NOM)
+ 1 V; I
OUT
= 1 mA; C
IN
= C
OUT
= 1
mF;
unless otherwise noted. Typical values are at T
A
= +25°C.
Parameter
Operating Input Voltage
Output Voltage (Fast Mode)
Test Conditions
(Note NO TAG)
T
A
= +25°C,
I
OUT
= 5 mA
−40°C
≤
T
A
≤
85°C,
I
OUT
= 5 mA
Output Voltage Temp.
Coefficient
Line Regulation
V
OUT
> 2 V
V
OUT
≤
2 V
V
OUT
> 2 V
V
OUT
≤
2 V
Symbol
V
IN
V
OUT
Min
1.4
x0.99
−20
x0.975
−50
±50
Line
Reg
0.02
Line
Reg
−1.0
−20
35
V
DO
0.62
0.55
0.48
0.34
0.23
I
OUT
V
OUT
= 0 V
I
OUT
= 0 mA, Low
Power Mode (Note 3)
V
OUT
≤
1.85 V
V
OUT
> 1.85 V
I
GND
I
STB
I
OUTH
I
OUTL
V
CEH
V
CEL
I
CEPD
AE Input Voltage “H”
AE Input Voltage “L”
V
AEH
V
AEL
1.0
0.4
0.1
1.0
1.0
0.4
mA
V
2.0
I
SC
I
Q
300
50
1.0
1.5
55
0.1
1
8.0
4.0
4.0
mA
mA
mA
mA
V
0.50
0.20
1.0
20
80
0.85
0.78
0.70
0.50
0.35
mA
mA
mA
%
mV
mV
V
Typ
Max
5.25
x1.01
20
x1.015
30
Unit
V
V
mV
V
mV
ppm/°C
%/V
T
A
=
−40
to 85°C
V
IN
= V
OUT
+ 0.5 V to
5V
V
IN
≥
1.4 V
I
OUT
= 1 mA,
(Low Power Mode)
I
OUT
= 10 mA,
(Fast Mode)
V
OUT
> 2.0 V
V
OUT
≤
2.0 V
I
OUT
= 10 mA to 300 mA
Load Regulation
I
OUT
= 1 mA to 10 mA
Dropout Voltage
I
OUT
= 300 mA
0.8 V
≤
V
OUT
< 0.9 V
0.9 V
≤
V
OUT
< 1.0 V
1.0 V
≤
V
OUT
< 1.5 V
1.5 V
≤
V
OUT
< 2.6 V
2.6 V
≤
V
OUT
< 4.0 V
Output Current
Short Current Limit
Quiescent Current
Supply Current
Standby Current
Fast Mode Switch−Over Current
Low Power Switch−Over
Current
CE Pin Threshold Voltage
I
OUT
= 10 mA, Fast Mode
V
CE
= 0 V, T
A
= 25°C
I
OUT
= light to heavy load
I
OUT
= heavy to light load
CE Input Voltage “H”
CE Input Voltage “L”
CE Pull Down Current
AE Pin Threshold Voltage
3. The value of supply current is excluding the Pull−down constant current of CE and AE Pin
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NCP4589
ELECTRICAL CHARACTERISTICS
−40°C
≤
T
A
≤
85°C; V
IN
= V
OUT(NOM)
+ 1 V; I
OUT
= 1 mA; C
IN
= C
OUT
= 1
mF;
unless otherwise noted. Typical values are at T
A
= +25°C.
Parameter
AE Pull Down Current
Power Supply Rejection Ratio
V
IN
= V
OUT
+ 1 V or 2.2 V whichever is higher,
DV
IN
= 0.2 V
pk−pk
, I
OUT
= 30 mA, f = 1 kHz, Fast
Mode
V
OUT
= 1.0 V, I
OUT
= 30 mA, f = 10 Hz to
100 kHz
V
IN
= 4 V, V
CE
= 0 V
Test Conditions
Symbol
I
AEPD
PSRR
Min
Typ
0.1
70
Max
Unit
mA
dB
Output Noise Voltage
Low Output N−channel Tr. On
Resistance
V
N
R
LOW
90
50
mV
rms
W
3. The value of supply current is excluding the Pull−down constant current of CE and AE Pin
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4
NCP4589
TYPICAL CHARACTERISTICS
1.2
1.0
0.8
V
OUT
(V)
0.6
0.4
0.2
0.0
0
5.25 V
1.4 V
V
OUT
(V)
3.8 V
2.8 V
V
IN
= 1.8 V
1.4
1.2
1.0
0.8
0.6
0.4
0.2
100
200
300
400
500
I
OUT
, OUTPUT CURRENT (mA)
600
700
0.0
0
100
200
300
400
500
I
OUT
, OUTPUT CURRENT (mA)
600
700
5.25 V
V
IN
= 1.6 V
3.8 V
1.8 V
2.8 V
Figure 3. Output Voltage vs. Output Current
1.0 V Version (T
J
= 255C)
2.0
1.8
1.6
1.4
V
OUT
(V)
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
100
200
300
400
500
600
V
IN
= 2.8 V
5.25 V
3.8 V
V
OUT
(V)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
Figure 4. Output Voltage vs. Output Current
1.2 V Version (T
J
= 255C)
4.3 V
5.25 V
V
IN
= 3.8 V
100
200
300
400
500
600
I
OUT
, OUTPUT CURRENT (mA)
I
OUT
, OUTPUT CURRENT (mA)
Figure 5. Output Voltage vs. Output Current
1.8 V Version (T
J
= 255C)
0.6
0.5
0.4
V
DO
(V)
0.3
0.2
0.1
0.0
25_C
−40_C
T
J
= 85_C
V
DO
(V)
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Figure 6. Output Voltage vs. Output Current
3.3 V Version (T
J
= 255C)
T
J
= 85_C
25_C
−40_C
0
50
100
150
200
250
300
0
50
100
150
200
250
300
I
OUT
, OUTPUT CURRENT (mA)
I
OUT
, OUTPUT CURRENT (mA)
Figure 7. Dropout Voltage vs. Output Current
1.0 V Version
Figure 8. Dropout Voltage vs. Output Current
1.2 V Version
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