SP2524
Low ESR Cap. & Low Power High-speed CMOS LDO With CE Pin
DESCRIPTION
The SP2524 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. 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.
The SP2524 family is compatible with low ESR
capacitors. The current limiter's feedback circuit also
operates as a short protect for the output current limiter.
The SOT-23-5L / SOT-353 packages are available for
portable electronic equipment.
APPLICATIONS
Battery Power Equipment
Cellular Phone
Digital Cameras
Computer Disk Drivers
Portable games
Communication tools
FEATURES
Highly Accurate ± 2%
Maximum operation voltage 7V.
Dropout Voltage 200mV @ 150mA (3.3V type)
High Ripple Rejection 45dB (10 KHz)
Low Power Consumption 25μA (TYP.)
Minimum Output Current 300mA
Standby Current less than 0.1μA
Internal protector current limiter and short
protector
Small packages
SOT-23-5L / SOT-353 ,
and
other required
PIN CONFIGURATION
SOT-23-5L
SOT-353
PART MARKING
SOT-23-5L
SOT-353
2006/07/12
Ver.2
Page 1
SP2524
Low ESR Cap. & Low Power High-speed CMOS LDO With CE Pin
APPLCATION CIRCUIT
PIN DESCRIPTION
SOT-23-5L
1
2
3
4
5
SOT-353
1
2
3
4
5
Symbol
V
IN
V
SS
CE
NC
V
OUT
Description
Voltage
Input
Ground
Enable
No Connect
Voltage
Output
ORDERING INFORMATION
( X : Voltage Code ; Y : Year Code ; W: Week Code )
Part Number
Package
Part Marking
SP2524XS25RG
SOT-23-5L
4XYW
SP2524XS35RG
SOT-353
4XYW
※
Week Code : A ~ Z ( 1 ~ 26 ) ; a ~ z ( 27 ~ 52 )
※
SP2524XS25RG : Tape Reel ; Pb – Free
※
SP2524XS35RG : Tape Reel ; Pb – Free
VOLTAGE CODE INFORMATION
Voltage Code
(X)
D
K
N
S
Output Voltage
(V)
1.8
2.5
2.8
3.3
2006/07/12
Ver.2
Page 2
SP2524
Low ESR Cap. & Low Power High-speed CMOS LDO With CE Pin
ELECTRICAL CHARACTERISTICS
(T
A
=25℃ , Unless otherwise specified)
Parameter
Output Voltage
Maximum Output Current
Load Regulation
Dropout Voltage
Supply Current
Standby Current
Line Regulations
Input Voltage
Output Voltage
Temperature
Characteristics
Ripple-Rejection
Ripple-Rejection
Short Current
CE High Voltage
CE Low Voltage
CE High Current
CE Low Current
Conditions
V
IN
=V
OUT
+1.0V,I
OUT
= 30mA
V
IN
≥V
OUT
+1.0 V
V
IN
=V
OUT
+1.0 V
△
V
OUT 2
1.0 mA
≤I
OUT
≤
300 mA
Vdif 1
I
OUT
=30mA
Vdif 2
I
OUT
=150mA
I
DD
V
IN=
5V=V
CE
I
STBY
V
IN
=V
OUT(T)
+1.0V, V
CE
=V
SS
V
OUT
/
V
OUT
+0.5 V
≤VI
N
≤7V
(
△V
IN
– V
OUT
) I
OUT
=30 mA
V
IN
△
V
OUT
/
V
IN
=V
OUT
+1.0V,I
OUT
=10mA
(
△
T
opr
– V
OUT
) -40℃≦T
opr
≦85℃
|PSRR|
|PSRR|
Ishort
V
CEH
V
CEL
I
CEH
I
CEL
V
IN
=V
OUT
+1.0V，f=1 kHz
V
rip
=0.5V
rms
, I
OUT
=60 mA
V
IN
=V
OUT
+1.0V，f=10 kHz
V
rip
=0.5V
rms
, I
OUT
=60 mA
V
IN
=V
OUT
+1.0V, V
OUT
=V
SS
1.6
V
IN
=
V
CE
=
V
OUT(T)
+1.0V
V
IN
=V
OUT(T)
+1.0V, V
CE
=V
SS
-0.1
-0.1
Symbol
V
OUT(E) 1
I
OUT
Min.
x 0.98
Typ.
V
OUT(T
)
Max.
x 1.02
V
OUT(T
)
X1.0%
300
Unit
V
mA
V
mV
mV
uA
uA
%/V
V
ppm/℃
dB
dB
15
E1
E2
25
0.01
0.025
40
0.1
0.1
7
1.8
±100
55
45
50
Vin
0.25
0.1
0.1
mA
V
V
uA
uA
(NOTE 1) V
OUT(T)
= Specified Output Voltage
(NOTE 2) V
OUT(E)
= Effective Output Voltage (le. The output voltage when "V
OUT(T)
+1.0V" is provided at the V
IN
pin while maintaining a certain I
OUT
value.)
(NOTE 3) Vdif = {V
IN 1
(NOTE5) + V
OUT 1
(NOTE4)}
(NOTE 4) V
OUT1
= A voltage equal to 98% of the Output Voltage whenever an amply stabilized I
OUT
{V
OUT(T)
+
1.0V} is input.
(NOTE 5) V
IN 1
= The Input Voltage when V
OUT 1
appears as Input Voltage is gradually decreased.
(NOTE 6) Unless otherwise stated, V
IN
= V
OUT(T)
+1.0V
DROPOUT VOLTAGE LIST ( E1 / E2 )
V
OUT
(
T
A
=25℃
)
1.8
2.5
2.8
3.3
E1
(I
OUT
=30mA)
TYP
MAX
180
210
60
100
60
100
50
90
E2(
I
OUT
=150mA)
TYP
MAX
350
400
240
290
220
270
200
250
2006/07/12
Ver.2
Page 4
嵌入式系统
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