Advanced Power
Electronics Corp.
FEATURES
Input Voltage : 1.2V to 12V
Low Quiescent Current : 17uA (typ.)
Low Saturation Voltage : 200mV Typical at 300mA
350mA Typical Switching Current Limiting
High Output Voltage : up to 34V
Low Profile SOT-23-5L Pb-Free Packaging
Halogen Free Product
APE1910
STEP-UP PFM DC/DC CONVERTER
DESCRIPTION
The APE1910 is a Pulse Frequency Modulation (PFM)
DC/DC converter. It is Low quiescent current 30uA and
shutdown current less 1uA. The APE1910 feature a wide
input voltage. The operating voltage is ranged from 1.2V to
12V. It also feature low quiescent current, switching current
limiting, low temperature coefficient.
Smaller package size and fewer tiny external
components are required in the application to save space
and lower cost. APE1910 is available in SOT-23-5L
TYPICAL APPLICATION
VIN=5V
L1
1
22uH'
D1
B140
R3
4.7M
C1
VIN
4.7uF/25V
R1
100K
C2
option
EN
SW
GND
FB
C3
4.7u/50V
2
1
2
Vout=30V
APE1910
R2
200K
Vout= VFB x (1 + R3/R2)
VFB=1.23V, R2 suggest 100K~300K
Figure 1. VCC=5V/ VOUT=30V for LCE.OLED Bias Supply
VIN=1.2V~2.5V
L1
1
10uH
2
1
D1
B140
C4
10pF
C3
2
Vout=3.3V
C1
4.7uF/25V
R1
100K
C2
Option
VIN
EN
SW
GND
FB
R3
202K
4.7u/50V
APE1910
R2
120K
Vout=VFB x (1 + R3/R2)
VFB=1.23V, R2 Suggest 100K~300K
Figure 2. VCC=1.2~2.5V/ VOUT=3.3V for 1 or 2 cells to 3.3V boost converter
Data and specifications subject to change without notice
1
20130108V1.1
Advanced Power
Electronics Corp.
ABSOLUTE MAXIMUM RATINGS
V
IN
Pin Voltage(V
IN
) ---------------------------------------- 15V
SW Voltage(V
SW
) ------------------------------------------- 36V
Feedback Pin Voltage(V
FB
) ------------------------------ V
IN
EN Pin Voltage(V
EN
) --------------------------------------- 15V
Maximum Junction Temperature(T
J
) ------------------ 150°C
Storage Temperature Range(T
ST
) --------------------- -40°C To 150°C
Operating Temperature Range(T
OP
) ------------------ -40°C To 125°C
Power Dissipation(P
D
) ------------------------------------- 0.4W
Thermal Resistance from Junction to Case(Rth
JC
)
Thermal Resistance from Junction to Ambient(Rth
JA
)
Note
APE1910
110°C/W
250°C/W
Note. Rth
JA
is measured with the PCB copper area of approximately 1 in
2
(Multi-layer) that need connect to GND pin of the APE1910
PACKAGE / ORDERING INFORMATION
APE1910X
Package Type
Y5 : SOT-23-5L
Top View
V
IN
EN
5
4
1
2
3
SW
GND
FB
SOT-23-5L
ELECTRICAL SPECIFICATIONS
(V
IN
=5V, V
OUT
=12V, T
A
=25℃, unless otherwise specified)
Parameter
Input Voltage
Quiesceint Current
Shutdown Current
Feedback Voltage
Feedback Bias Current
Line Regulation
Switching Saturation Voltage
Switch Current Limit
Switch Leakage Current
EN Pin Logic Input Threshold Voltage
SYM
V
IN
I
CCQ
I
SD
V
FB
I
FB
V
Line
V
CESAT
I
SW
I
LEAK
V
ENH
V
ENL
TEST CONDITION
V
FB
=1.5V, Not Switching
V
EN
=0V
V
FB
=1.23V
1.2V<V
IN
<12V, Load=10mA
I
SW
=300mA
Switch-off, V
SW
=5V
High (regulator ON)
Low (regulator ON)
V
EN
=1.2V
V
EN
=5V
MIN
1.2
-
-
1.205
-
-
-
300
-
0.9
-
-
-
TYP
-
17
-
1.23
30
0.05
200
350
0.01
-
-
2
8
MAX
12
30
1
1.255
80
0.1
300
400
5
-
0.25
3
12
UNITS
V
uA
uA
V
nA
%/V
mV
mA
uA
V
uA
EN Pin Input Current
I
EN
PIN DESCRIPTIONS
PIN SYMBOL
VIN
SW
FB
EN
GND
PIN DESCRIPITON
IC Power Supply Pin
Switch pin. Connect external inductor & diode here
Feedback Pin
Shutdown Pin
H : normal operation
L : operation stopped
Ground Pin
2
Advanced Power
Electronics Corp.
BLOCK DIAGRAM
APE1910
1 SW
Driver
Feedback
Comparator
FB 3
V
IN
5
V
REF
1.23V
R
C
Q1
-
A1
+
C
C
400nS
One Shot
Current-Limit
Comparator
-
+
2 GND
EN 4
Shutdown
Current-Limit
Reference
APPLICATION INFORMATION
Capacitor Selection
The small size of ceramic capacitors makes them ideal for APE1910
applications. X5R and X7R types are recommended because they retain their
capacitance over wider voltage and temperature ranges than other types such as Y5V
or Z5U. A 4.7uF input capacitor and a 4.7uF output capacitor are sufficient for most
APE1910 applications.
Inductor Selection
A 10uH inductor is recommended for most APE1910 applications. Although small
size and high efficiency are major concerns, the inductor should have low core losses
and low DCR (copper wire resistance).
Diode Selection
Schottky diodes with higher current ratings usually have lower forward voltage
drop, larger diode capacitance and fast reverse recovery, it is the ideal choices for
APE1910 applications. The forward voltage drop of a Schottky diode represents the
conduction losses in the system, while the diode capacitance (C
T
or C
D
) represents the
switching losses. For diode selection, both forward voltage drop and diode capacitance
need to be considered.
PCB Layout Guide
When laying out the PC board, the following suggestions should be taken to ensure
proper operation of the APE1910. These items are also illustrated graphically in below.
1. The power traces, including the GND trace, the SW trace and the V
CC
trace should be
kept short, direct and wide to allow large current flow. Put enough multiply-layer pads
when they need to change the trace layer.
2. Connect the input capacitor C1 to the V
CC
pin as closely as possible to get good power
filter effect.
3. Do not trace signal line under inductor.
3
Advanced Power
Electronics Corp.
TYPICAL PERFORMANCE CHARACTERISTICS
APE1910
VIN VS Quiescent Current
25
24
Quiescent Current (uA)
Quiescent Current (uA)
23
22
21
20
19
18
17
16
15
1
3
5
7
VIN (V)
9
11
13
25
24
23
22
21
20
19
18
17
16
15
-50
Temperature VS Quiescent Current
VIN=12V
VIN=5V
VIN=1.2V
-25
0
25
50
75
100
Temperature (℃)
Shutdown Pin Voltage VS Shutdwon Pin Current
40
35
1.255
1.25
1.245
Temperature VS Feedback Voltage
Shutdown Pin Current (uA)
Feedback Voltage (V)
0
2
4
6
8
10
12
30
25
20
15
10
5
0
1.24
1.235
1.23
1.225
1.22
1.215
1.21
1.205
-50
-25
0
25
50
75
100
Shutdown Pin Voltage (V)
Temperature (℃)
90
80
70
VIN=4.2V
Efficiency (% )
60
50
40
30
20
10
0
0
5
10
15
20
25
VIN=3.3V
VIN=2.5V
30
35
Load Current (mA)
4
Advanced Power
Electronics Corp.
MARKING INFORMATION
SOT-23-5L
Part Number : B1
Week:
A~Z : 01~26
a~z : 27~52
ID Code : Internal
Year :
A = 2010
1 = 2011
：
：
APE1910
B1YWS
5
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