Advanced Power
Electronics Corp.
FEATURES
Stable with 2.2uF Low ESR Ceramic Capacitor
2% Voltage Reference Accuracy
Wide Operating Range: 2.5V ~ 16V
5uA Quiescent Current in Shutdown
Current Limit and Thermal Shutdown
Logic Input Enable Pin
RoHS Compliant & Halogen Free
SOT-23-5L Package
APU8852
DESCRIPTION
The APU8852 device is an efficient linear
voltage regulator with better than 2% initial
voltage accuracy, very low dropout voltage and
very low ground current designed especially for
hand held, battery powered applications. Other
features of the device are: TTL compatible
enable/shutdown control input, current limiting
and thermal shutdown.
The APU8852 is available in fixed and
adjustable output voltage versions in a small
SOT-23 5-Pin package.
150mA ULTRA LOW DROPOUT POSITIVE FIXED REGULATORS
APPLICATIONS
Laptop, Notebook & Palmtop Computers
Battery Powered Equipments
PCMCIA Vcc & Vpp Regulator
Consumer Electronics
High Efficiency Linear Power Supplies
TYPICAL APPLICATION
VIN
C1
2.2uF
+
VIN
VOUT
R1
+
GND
R2
C2
2.2uF
VOUT
Vo= 0.8 x (1+R1/R2)
Enable
EN
ADJ
Figure 1 - Typical application of the APU8852 adjustable voltage regulator.
VIN
C1
2.2uF
+
VIN
VOUT
+
VOUT=2.5V
C2
2.2uF
GND
Enable
EN
CBYP
+
C3
1000pF
Figure 2 - Typical application of the APU8852-25 fixed voltage regulator.
Data and specifications subject to change without notice
1
201203281
Advanced Power
Electronics Corp.
ABSOLUTE MAXIMUM RATINGS
(T
A
=25
o
C, unless otherwise specified.)
Input Voltage (V
IN
) ------------------------------------------ 18V
Enable Input Voltage (V
EN
) ------------------------------- 18V
Storage Temperature Range (T
ST
) --------------------- -65 to 150
o
C
Operating Junction Temperature Range (T
J
) -------
Thermal Resistance Junction to Ambient (Rth
ja
)
Note
-40 to 85
o
C
256
o
C/W
APU8852
Note. Rth
JA
is measured with the PCB copper area of approximately 1 in
2
(Multi-layer).
PACKAGE / ORDERING INFORMATION
APU8852X-XX
ADJ
TOP VIEW
EN GND VIN
Fixed
TOP VIEW
EN GND VIN
Package
Y5 : SOT-23-5L
Output Voltage
Blank : ADJ
18 : 1.8V
25 : 2.5V
28 : 2.8V
30 : 3.0V
33 : 3.3V
SOT-23-5L
SOT-23-5L
ADJ
VOUT
CBYP
VOUT
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over C
IN
=C
O
=2.2F, I
O
=100A, V
IN(MIN)
=2.5V(Adjustabledevices)
V
IN
=V
O
+ 1V(for fixed voltage devices), V
OUT
=V
FB
(for adjustable version only), C
BYP
=470pF(for fixed voltage
devices), V
EN
=2V and T
A
=25
o
C. Typical values refer to T
A
=25
o
C. Low duty cycle pulse testing is used which keeps
junction and case temperatures equal to the ambient temperature.
Parameter
Reference Voltage
Line Regulation
Load Regulation (Note 1)
Dropout Voltage (Note 2)
Ground Current (Note 3)
Minimum Load Current
Ground Current-SD Activated
Current Limit
Thermal Regulation
Adj Pin Current
Enable Pin Input LO Voltage
Enable Pin Input HI Voltage
Enable Pin Input LO Current
Enable Pin Input HI Current
SYM
Vo
∆V
I
∆V
L
V
DROP
I
Q
I
Min
I
Q(SD)
I
CL
ΔV
P
I
Adj
V
ENL
V
ENH
V
EN
= 0V to 0.8V or Open
V
O
=0V
V
IN
= 10V, I
O
= 150mA, 10ms Pulse
V
IN
= 2.5V, V
O
= V
ADJ
Regulator OFF
Regulator ON
V
ENL
= 0V
V
ENH
= 2V
TEST CONDITION
V
O
+ 1V<V
IN
<16V
1mA < I
O
< 100mA
I
O
=100uA
I
O
=50mA
I
O
=100mA
V
EN
= 2V, I
O
= 100uA
MIN
-2
-
-
-
-
-
-
-
-
150
-
-
-
2
-
-
TYP
-
0.1
1.5
10
50
120
120
5
5
-
0.05
0.1
-
-
0.01
20
MAX
2
-
-
-
-
-
-
-
-
-
-
-
0.8
-
-
-
uA
mA
uA
mA
%/W
uA
V
uA
mV
UNITS
%
%/V
%
Note 1: Low duty cycle pulse testing with Kelvin connections is required in order to maintain accurate data.
Note 2: Dropout voltage is defined as the minimum differential voltage between VIN and VOUT required to maintain regulation at VOUT. It is
measured when the output voltage drops 1% below its nominal value.
Note 3: Ground current is the regulator quiescent current plus the pass transistor current. The total current from the supply is the sum of the load
current plus the ground pin current.
2
Advanced Power
Electronics Corp.
PIN DESCRIPTIONS
PIN SYMBOL
PIN DESCRIPTION
APU8852
The input pin of the regulator. Typically a large storage capacitor is connected from
this pin to ground to insure that the input voltage does not sag below the minimum
VIN
drop out voltage during the load transient response. This pin must always be higher
than VOUT by at least the amount of the dropout voltage and some margin in order
for the device to regulate properly.
GND
EN
Adj (Adjustable only)
C
BYP
(Fixed only)
VOUT
Ground pin. This pin must be connected to the lowest potential in the system and
all other pins must be at higher potential with respect to this pin.
Enable pin. A low signal or left open on this pin shuts down the output. This pin
must be tied HI or to VIN for normal operation.
A resistor divider from this pin to the VOUT pin and ground sets the output voltage.
A 470 to 1000pF bypass capacitor connected to this pin reduces the output noise.
The output of the regulator. A minimum of 2.2uF with max ESR of 1Ω capacitor
must be connected from this pin to ground to insure stability.
BLOCK DIAGRAM
VIN
1
5
VOUT
ADJ
4
+
-
+
Thermal
Shutdown
Current
Limit
3
EN
GND
2
Figure 3 - APU8852Y5 Adjustable output block diagram.
VIN
1
5
VOUT
+
CBYP
4
+
Thermal
Shutdown
GND
2
Current
Limit
3
EN
-
Figure 4 - APU8852Y5 Fixed Mode output block diagram.
3
Advanced Power
Electronics Corp.
TYPICAL PERFORMANCE CHARACTERISTICS
Quiescent Current vs. Temperature
V
IN
=5V , V
OUT
=3.3V , I
OUT
=0A
APU8852
Quiescent Current vs. Input Voltage
V
IN
=4V~16V, V
OUT
=3.3V, I
OUT
=0A, T
J
=25
o
C
IQ vs Temperature
200.0uA
180.0uA
160.0uA
140.0uA
120.0uA
200.0uA
180.0uA
160.0uA
140.0uA
120.0uA
IQ vs Input Voltage
IQ
IQ
100.0uA
80.0uA
60.0uA
40.0uA
20.0uA
0.0uA
-60
℃
100.0uA
80.0uA
60.0uA
40.0uA
20.0uA
VIN=5V
0.0uA
-40
℃
-20
℃
0
℃
20
℃
40
℃
60
℃
80
℃
100
℃
120
℃
140
℃
4V
6V
8V
10V
12V
14V
16V
Temperature
Input Voltage
Output Voltage vs. Output Current
V
IN
=5V , V
OUT
=3.3V , I
OUT
=10mA~150mA
Output Voltage vs. Input Voltage
V
IN
=4~16V , V
OUT
=3.3V, I
OUT
=10mA
3.3600V
3.3580V
3.3560V
Output Voltage vs Output Current
3.4300V
3.4100V
Output Voltage vs Input Voltage
3.3900V
3.3540V
3.3520V
3.3700V
Output Voltage
3.3500V
Output V oltage
Temp=25
℃
20mA
40mA
60mA
80mA
100mA
120mA
140mA
160mA
3.3500V
3.3480V
3.3460V
3.3440V
3.3420V
3.3400V
3.3380V
3.3300V
3.3100V
3.2900V
3.2700V
3.3360V
3.3340V
3.3320V
3.3300V
4V
6V
8V
10V
12V
14V
16V
3.2500V
3.2300V
0mA
Temp=25
℃
Input Voltage
Output Current
Output Voltage vs. Temperature
V
IN
=5V , V
OUT
=3.3V, I
OUT
=10mA
PSRR
V
IN
=5V , V
OUT
=3.3V , I
OUT
=10mA
Output Voltage vs Temperature
3.4300V
3.4100V
3.3900V
3.3700V
Output Voltage
3.3500V
3.3300V
3.3100V
3.2900V
3.2700V
3.2500V
VIN=5V
3.2300V
-40
℃
-20
℃
0
℃
20
℃
40
℃
60
℃
80
℃
100
℃
120
℃
140
℃
Temperature
4
Advanced Power
Electronics Corp.
TYPICAL PERFORMANCE CHARACTERISTICS
Load Transient
V
IN
=5V , V
OUT
=3.3V , I
OUT
=10~150mA / 5ms , 2.5A/us
APU8852
Line Transient
V
IN
=4.3~5.3V, V
OUT
=3.3V, I
OUT
=10mA
5
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