Advanced Power
Electronics Corp.
APU8850
150mA ULTRA LOW DROPOUT POSITIVE
ADJUSTABLE AND FIXED REGULATORS
DESCRIPTION
FEATURES
The APU8850 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 APU8850 is available in fixed and adjustable
output voltage versions in a small SOT-23-5L, J-lead 20218, ESOP-8 & SOT-89 package.
Stable with 2.2uF Low ESR Ceramic Capacitor
2% Voltage Reference Accuracy
Wide Operating Range: 4.5V ~ 25V
5uA Quiescent Current in Shutdown
Current Limit and Thermal Shutdown
Logic Input Enable Pin
RoHS Compliant
SOT-89, ESOP-8, J-lead 2021-8 & SOT-23-5L Package
APPLICATIONS
Laptop, Notebook & Palmtop Computers
Battery Powered Equipments
PCMCIA Vcc & Vpp Regulator
Consumer Electronics
High Efficiency Linear Power Supplies
TYPICAL APPLICATION
VIN
VIN
C1
2.2uF
VOUT
R1
+
GND
+
C2
2.2uF
VOUT
Vo= 1.25 x (1+R1/R2)
R2
EN
Enable
ADJ
Figure 1 - Typical application of the APU8850 adjustable voltage regulator.
VIN
VIN
C1
2.2uF
VOUT=3.3V
VOUT
+
+
GND
EN
Enable
CBYP
+
C2
2.2uF
C3
1000pF
Figure 2 - Typical application of the APU8850-33
fixed voltage regulator.
Figure 3 - Typical application of the APU8850
fixed voltage regulator as SOT-89
ORDERING INFORMATION
APU8850X-XX
Package
Y5 : SOT-23-5L
U : J-lead 2021-8
G : SOT-89
MP : ESOP-8
Output Voltage
Blank : ADJ
18 : 1.8V
25 : 2.5V
28 : 2.8V
30 : 3.0V
33 : 3.3V
50 : 5.0V
Data and specifications subject to change without notice
1
200912073C
Advanced Power
Electronics Corp.
APU8850
ABSOLUTE MAXIMUM RATINGS (TA=25oC, unless otherwise specified.)
Input Voltage (VIN) ------------------------------------------ 27V
Enable Input Voltage (VEN) ------------------------------- 27V
Storage Temperature Range (TST) --------------------- -65 to 150oC
Operating Junction Temperature Range (T J) -------- -40 to 85oC
Thermal Resistance Junction to Ambient (Rth ja)
SOT-23-5L
256oC/W
SOT-89
250oC/W
ESOP-8
150oC/W
J-lead 2021-8
300oC/W
PACKAGE INFORMATION
ADJ
ESOP-8 (MP)
Fixed
TOP VIEW
TOP VIEW
EN GND VIN
EN GND VIN
VOUT
SOT-23-5L
NC
NC/ADJ
ADJ
VOUT
CBYP
1
8
2
7
GND
3
6
4
5
TAB is VIN
J-lead 2021-8
( Top View )
(Top View)
NC
SOT-23-5L
SOT-89
( Top View )
VIN
EN 1
8 GND
GND
ADJ 2
7 GND
NC
VOUT 3
6 GND
EN
VIN 4
5 GND
VOUT
1
2
GND
VIN
3
VOUT
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over C IN=CO=2.2F, IO=100uA, VIN(MIN)=4.5V, CBYP=470pF
(for fixed voltage devices), V EN=2V and TA=25oC. Typical values refer to T A=25oC. Low duty cycle pulse testing is used
which keeps junction and case temperatures equal to the ambient temperature.
Parameter
Reference Voltage
Line Regulation
SYM
Vo
TEST CONDITION
MIN
TYP
MAX
UNITS
-2
-
2
%
∆VI
VO + 2V<VIN<25V, IO=1mA
-
0.1
-
%/V
Load Regulation (Note 1)
∆VL
VIN=VO+2V
-
0.5
-
%
Dropout Voltage (Note 2)
VDROP
Ground Current (Note 3)
IQ
Ground Current-SD Activated
IQ(SD)
Adjust Pin Current
IADJ
Current Limit
ICL
Short Current
IZ
Enable Pin Input LO Voltage
VEN(L)
VEN(H)
IO=100uA
-
1
-
IO=100mA
-
1.2
-
VEN=2V, IO=100uA
-
250
-
uA
VEN=0V or Open
-
1
-
uA
VIN=4.5V, VO=VADJ
-
0.1
-
uA
V
200
-
-
mA
VO=0V
-
175
-
mA
Regulator OFF
-
-
0.8
V
Regulator ON
2
-
-
V
Enable Pin Input LO Current
VEN(L) =0V
-
0.01
-
uA
Enable Pin Input HI Current
VEN(H)=2V
Enable Pin Input HI Voltage
Over Temperature Shutdown
Over Temperature Shutdown Hysteresis
-
10
-
uA
-
150
-
o
C
-
o
C
-
10
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.
APU8850
PIN DESCRIPTIONS
PIN SYMBOL
PIN DESCRIPTION
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.
Ground pin. This pin must be connected to the lowest potential in the system and
GND
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
EN
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.
Adj (Adjustable only)
To minimize the error due to the error amplifier, select the values of the resistor
dividers to be less than 10KΩ.
CBYP (Fixed only)
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 1 Ω capacitor
VOUT
must be connected from this pin to ground to insure stability.
BLOCK DIAGRAM
VIN
1
ADJ
4
5
VIN
VOUT
1
5
VOUT
+
+
CBYP
-
+
Thermal
Shutdown
+
GND
-
4
2
Thermal
Shutdown
Current
Limit
GND
3
2
Current
Limit
EN
3
EN
Figure 4 - APU8850Y5 Adjustable output block diagram. Figure 5 - APU8850Y5 Fixed Mode output block diagram.
VIN
2
3
VOUT
+
+
Thermal
Shutdown
GND
1
Current
Limit
Figure 6 - APU8850 SOT-89 Fixed Mode output block
3
Advanced Power
Electronics Corp.
APU8850
TYPICAL PERFORMANCE CHARACTERISTICS
VIN=5V，VEN=5V，VOUT=3.3V
Output Voltage VS. Temperature
3.37
Output Voltage
3.36
3.35
3.34
3.33
3.32
3.31
Iout=0mA
Iout=10mA
Iout=20mA
3.3
-40
-20
0
20
40
60
80
100
Temperature(℃ )
VIN=5V，VEN=5V，VOUT=3.3V
ADJ Voltage VS. Temperature
1.264
ADJ Voltage
1.26
1.256
1.252
1.248
1.244
Iout=0mA
Iout=10mA
Iout=20mA
1.24
-40
-20
0
20
40
60
80
100
Temperature(℃ )
VIN=4.5V ,VOUT=3.3V IOUT=10mA~200mA
Load Transient
IOUT
VOUT
4
Advanced Power
Electronics Corp.
APU8850
TYPICAL PERFORMANCE CHARACTERISTICS
Quiescent Current vs. Input Voltage
Quiescent Current vs. Temperature
VIN=4.5V , VOUT=3.3V , IOUT=10mA
VIN=4.5V~20V , VOUT=3.3V
300
350
300
Quiescent Current(uA)
Quiescent Current(uA)
250
200
150
100
250
200
150
100
50
50
0
0
-40
-20
0
20
40
60
80
100
4.5
125
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
Output Voltage vs. Input Voltage
Output Voltage vs. Output Current
VIN=4.5V , VOUT=3.3V , IOUT=10mA~200mA
VIN=4.5V~20V , VOUT=3.3V
3.32
3.312
3.31
3.311
3.3
3.31
Output Voltage(V)
Output Voltage(V)
10
Input Voltage(V)
Temperature('C)
3.29
3.28
3.309
3.308
3.27
3.307
3.26
3.306
Iout=0mA
3.25
20
40
60
80
100
120
140
160
180
200
Iout=10mA
Iout=20mA
3.305
4.5
5
6
7
8
9
Output Current(mA)
10
11
12
13
14
15
16
17
18
19
20
Input Voltage(V)
Dropout Voltage vs. Temperature
Dropout Voltage vs. Output Current
VIN=4.5V , VOUT=3.3V
VIN=4.5V , VOUT=3.3V , IOUT=10mA~200mA
1.2
0.9
0.8
Dropout Voltage(V)
1
Dropout Voltage(V)
0.7
0.6
0.5
0.4
0.3
0.8
0.6
0.4
0.2
0.2
0.1
Iout=0mA
Iout=10mA
0
0
0
-40
-20
0
20
40
Temperature('C)
60
80
100
20
40
60
80
100
120
140
160
180
200
125
Output Current(mA)
5
ADVANCED POWER ELECTRONICS CORP.
Package Outline : ESOP-8
P
Millimeters
Q
SYMBOLS
MIN
A2
MAX
A
5.80
6.00
6.20
B
4.80
4.90
5.00
C
3.80
3.90
4.00
D
0°
4°
8°
E
0.40
0.65
0.90
F
0.19
0.22
0.25
M
0.00
0.08
0.15
H
0.35
0.42
0.49
L
1.35
1.55
1.75
0.375 REF.
J
B
NOM
K
45°
G
1.27 TYP.
P
2.15
2.25
2.35
Q
2.15
2.25
2.35
L
I
J
1.All Dimension Are In Millimeters.
2.Dimension Does Not Include Mold Protrusions.
Part Marking Information & Packing : ESOP-8
8850MP-XX
YWWSSS
Part Number
Package Code
Output Voltage ---- Blank : Adj
18 : 1.8V, 25 : 2.5V, 28 : 2.8V
30 : 3.0V, 33 : 3.3V, 50 : 5.0V
Date Code (YWWSSS)
Y：Last Digit Of The Year
WW：Week
SSS：Sequence
Draw No. M1-MP-8-G-v01
ADVANCED POWER ELECTRONICS CORP.
Package Outline : 2021-8
D
8
7
6
5
E2
E1
1
2
Millimeters
SYMBOLS
3
4
e
B
MIN
NOM
MAX
E
1.80
2.10
2.40
E1
1.65
1.75
1.85
E2
2.00
2.20
2.40
L
0.35
0.45
0.55
A
---
---
1.10
A1
0.00
---
0.10
A2
0.70
0.90
1.00
D
1.80
2.00
2.20
B
0.15
--
0.35
C
0.10
0.15
0.20
θ
0°
4°
8°
0.5bsc
e
A2
C
A
A1
L
θ
E
1.All Dimensions Are in Millimeters.
2.Dimension Does Not Include Mold Protrusions.
Part Marking Information & Packing : 2021-8
RZ&XX
Part Number : RZ
Output Voltage ---- Blank : Adj
D : 1.8V, F : 2.5V, G : 2.8V
H : 3.0V, I : 3.3V, J : 5.0V
Date Code
Draw No. M1-U-8-G-v00
ADVANCED POWER ELECTRONICS CORP.
Package Outline : SOT-23-5L
Millimeters
SYMBOLS
MIN
NOM
MAX
A
1.00
1.10
1.30
A1
0.00
---
0.10
A2
0.70
0.80
0.90
b
0.30
0.40
0.50
C
0.10
0.15
0.25
D
2.70
2.90
3.10
E
1.40
1.60
1.80
e
---
1.90(TYP)
---
H
2.60
2.80
3.00
L
0.37
---
---
θ1
0°
5°
9°
e1
---
0.95(TYP)
---
Note 1：Package Body Sizes Exclude Mold Flash Protrusions or Gate Burrs.
Note 2：Tolerance ± 0.1000 mm(4mil) Unless Otherwise Spe- cified.
Note 3：Coplanarity：0.1000 mm
Note 4：Dimension L Is Measured in Gage plane.
Part Marking Information & Packing : SOT-23-5L
Part Number : RZ
RZ&SS
Output Voltage ---- Blank : Adj
D : 1.8V, F : 2.5V, G : 2.8V
H : 3.0V, I : 3.3V, J : 5.0V
Date Code : SS
SS:2004,2008,2012…
SS:2003,2007,2011…
SS:2002,2006,2010…
SS:2001,2005,2009…
Draw No. M1-A-5-G-v00
ADVANCED POWER ELECTRONICS CORP.
Package Outline & Packing : SOT-89
C
J
D
B
2
1
E
3
F
I
H
K
Millimeters
SYMBOLS
MIN
NOM
MAX
A
4.40
-
4.60
B
4.05
-
4.25
C
1.40
-
1.75
E
2.40
-
2.60
F
0.89
-
1.20
I
0.35
-
0.55
H
----
1.50
----
G
----
3.00
----
J
1.40
-
1.60
K
0.35
-
0.43
G
1.All Dimensions Are in Millimeters.
A
2.Dimension Does Not Include Mold Protrusions.
Part Marking Information : SOT-89
8850&
YWWS
Part Number
Output Voltage ---- Blank : Adj
D : 1.8V, F : 2.5V, G : 2.8V
H : 3.0V, I : 3.3V, J : 5.0V
Date Code (YWWS)
Y:Year
WW：Week
S：Sequence
Draw No. M1-V-3-G-v00
APU8850
Halogen Free Product
FOOTPRINT
ADVANCED POWER ELECTRONICS CORP.