AUK GRM42-6X5R475K010 Low drop output voltage regulator Datasheet

S52xxM
Semiconductor
Low Drop Output Voltage Regulator
Description
The S52xxM is a u-cap 150mA linear voltage regulator in the SOT-25 package. This
regulator has very low dropout voltage and very low ground current. It is designed
especially for hand-sets, battery-powered devices and can be controlled by a CMOS or TTL.
When the S52xxM is disabled, power consumption drops to nearly zero.
Features
• Low dropout voltage regulator
• Low quiescent current and guaranteed 150mA output
• Zero off-mode current
Ordering Information
Type NO.
S52xxM
Marking
Package Code
5□□
SOT - 25
□□: Voltage Code
Outline Dimensions
unit :
mm
BLOCK DIAGRAM
PIN Connections
1. Supply Input
2. Ground
3. Enable/Shutdown
4. Noise Bypass
5. Regulator Output
KSI-2012-006
1
S52xxM
Absolute Maximum Ratings
Ta=25°C
Characteristic
Symbol
Ratings
Unit
Input supply voltage
VIN
-0.4 ~+16
V
Enable Input Voltage
VEN
-0.4 ~+16
V
Power Dissipation
Pd
500
mW
Junction Temperature Range
Tj
-40 ~+125
°C
Storage Temperature Range
Tstg
-60 ~+150
°C
Lead Temperature Time
Tsol
260 (5 Sec)
°C
Electrical Characteristics
(※ VIN=VOUT+1V; IOUT = 100uA; CL=4.7uF; VEN≥2.0V; TJ=25℃)
Characteristic
Test Condition
Output voltage
VOUT
-
line Regulation
ÌVOUT/
VOUT
VIN=VOUT+1V to 16V
-
0.3
5
mV
Load Regulation
ÌVOUT/
VOUT
IOUT=1mA ~100mA
-
8
24
mV
ICC
VEN≤0.4V(shutdown)
-
0.01
1
uA
400
500
Quiescent Current
Min. Typ.
Max
.
Symbol
See Table 1
* IOUT=50mA (VOUT=1.5V)
Dropout Voltage
VDROP
* IOUT=100mA (VOUT=1.5V)
-
500
600
* IOUT=50mA (VOUT =1.8V)
-
150
250
* IOUT=100mA (VOUT =1.8V)
-
250
450
* IOUT=100uA
-
10
50
* IOUT=50mA
-
110
150
* IOUT=100mA
-
140
250
-
1.5
3.0
-
0.8
1.5
IOUT=50mA,VEN≥2.0(active)
Ground Pin Current
IGND
(Vout=1.5V/1.8V)
IOUT=50mA, VEN≥2.0(active)
Unit
mV
mA
eno
IOUT=50mA, CL=4.7uF
470pF from BYP to GND
-
260
-
nV √ Hz
Enable Input Logic-Low Voltage
VIL
Regulator Shutdown
-
-
0.4
V
Enable Input Logic-High Voltage
VIH
Regulator enabled
1.6
-
-
V
IIL
VIL≤0.4V
-
0.01
1
IIH
VIH≥2.0V
2
5
10
Output Noise
Enable Input Current
uA
*Note1 : Dropout Voltage is the difference between the input voltage and the output voltage at whitch point the regulator
starts to fall out of regulation (this is the point when the output voltage decreases by 100mV).
KSI-2012-006
2
S52xxM
Table 1
Electrical Characteristics Table
Test Condition; VIN = VOUT(TYP) +1V, IOUT =100uA, TA=25℃, unless otherwise specified.
Output
Voltage[V]
Voltage
Code
1.5
Voltage Limit [V]
MIN
MAX
15
1.440
1.560
1.8
18
1.728
1.872
2.5
25
2.400
2.600
2.8
28
2.688
2.912
3.0
30
2.880
3.120
3.3
33
3.168
3.432
5.0
50
4.800
5.200
■Typical Applications
5
Low-Noise Operation
:CN=470pF, CL≥4.7uF
Basic Operation
:CN= not used, CL≥1uF
KSI-2012-006
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S52xxM
Electrical Characteristic Curves
Fig. 2
Fig. 1.
Fig. 4
Fig. 3.
Fig.5
Fig.6.
KSI-2012-006
4
S52xxM
Electrical Characteristic Curves (Cont.)
Fig. 7.
Fig. 8
Shutdown (Dis/Enable) Operation
The S52xxM output can be turned off by applying 0.4V or less to the device’s Dis/Enable
pin (pin3). In shutdown mode, the S52xxM draws less than 1uA quiescent current. The
output of the S52xxM is enabled by applying 1.5V to 13V at the Dis/Enable pin. In
applications were the S52xxM output will always remain enabled, the Dis/Enable pin may
be connected to Vin(pin1). The S52xxM’s shutdown circuitry includes hysteresis, as such
the device will operate properly even if a slow moving signal is applied to the Dis/Enable
pin. The device’s shutdown pin includes a 2MΩ internal pull down resistor connected to
ground.
Short Circuit Protection
The S52xxM output can withstand momentary short circuit to ground. Moreover, the
regulator can deliver very high output peak current due to its 1A instantaneous short circuit
current capability.
Noise Bypass Capacitor
In low noise applications, the self noise of the S52xxM can be decreased further by
connecting a capacitor from the noise bypass pin (pin4) to ground (pin2). The noise bypass
pin is a high impedance node as such care should be taken in printed circuit board layout to
avoid noise pick-up from external sources. Moreover, the noise bypass capacitor should
have low leakage. Noise bypass capacitors with a value as low as 470pF may be used.
However, for optimum performance, use a 0.01uF or larger, ceramic chip capacitor. Note
that the turn on and turn off response of the S52xxM is inversely proportional to the value
of the noise bypass capacitor. For fast turn on and turn off, use a small value noise Bypass
capacitor. In applications were exceptionally low output noise is not required, consider
omitting the noise Bypass capacitor altogether.
KSI-2012-006
5
S52xxM
Output Capacitor Selection
AUK strongly recommends the use of low ESR(Equivalent series resistance) ceramic
capacitors for Cout and CN . The S52xxM is stable with low ESR capacitor (as low as zero Ω).
The value of the output capacitor should be 1uF or higher. Either ceramic chip or a
tantalum capacitor may be used at the output. Use of ceramic chip capacitors offer
significant advantages over tantalum capacitors. A Ceramic capacitor is typically cheaper
than a tantalum capacitor, it usually has a smaller footprint, lower height, and lighter
weight than a tantalum capacitor. Furthermore, unlike tantalum capacitors which are
polarized and can be damaged if connected incorrectly, ceramic capacitors are nonpolarized. Low value ceramic chip capacitors with X5R or X7R dielectric are available in the
100pF to 4.7uF range. Beware of using ceramic capacitors with Y5V dielectric since their
ESR increases significantly at cold temperatures. Figure 9 shows a list of recommended
ceramic capacitors for use at the output of S52xxM.
If a tantalum output capacitor is used then for stable operation AUK recommends a low
ESR tantalum capacitor with maximum rated ESR at or below 0.4Ω. Low ESR tantalum
capacitors, such as the TPS series from AVX Corporation (www.avxcorp.com) or the T495
series from Kemet (www.kemet.com) may be used.
In applications where a high output surge current can be expected, use a high value but
low ESR output capacitor for superior load transient response. The S52xxM is stable with
no load.
Fig. 9
COUT
Capacitor Size
IOUT
Dielectric
Part Number
Capacitor Vendor
1µF
′′
′′
′′
′′
′′
0805
0805
0805
1206
1206
1206
0 to 150mA
′′
′′
′′
′′
′′
X5R
X7R
X7R
X7R
X7R
X5R
C2012X5R1A105KT
GRM40X7R105K010
LMK212BJ105KG
GRM42-6X7R105K016
EMK316BJ105KL
TMK316BJ105KL
TDK
muRata
Taiyo-Yuden
muRata
Taiyo-Yuden
Taiyo-Yuden
2.2µF
′′
′′
0805
0805
1206
0 to 150mA
′′
′′
X5R
X5R
X5R
GRM40X5R225K 6.3
C2012X5R0J225KT
EMK316BJ225ML
muRata
TDK
Taiyo-Yuden
4.7µF
′′
1206
1206
0 to 150mA
′′
X5R
X7R
GRM42-6X5R475K010
LMK316BJ475ML
MuRata
Taiyo-Yuden
KSI-2012-006
6
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