Diodes AP1609 User Manual
AP1609
PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER
Features
• Input Voltage Range: 2.5~6V
• Output Voltage Range: 3.0~17V (±2.5%)
• PWM/PFM Switching Control
• Oscillator Frequency: 300KHz (±20%)
• High Efficiency: 91% (Typ.)
• Stand-by Current: I
• Built-in internal N-Channel MOS
• Lead Free Package: SOP-8L
• SOP-8L: Available in “Green” Molding Compound
(No Br, Sb)
• Lead Free Finish/ RoHS Compliant (Note 1)
1 = µA (Typ.)
STB
Applications
• Electronic Information Organizers
• Palmtops
• Cellular and Portable Phones
• Portable Audio Systems
• Various Multi-Function Power Supplies
General Description
The AP1609 is a high efficient step-up DC/DC converter. Large
output current is possible having a built in internal N channel
MOSFET, and using an external coil and diode.
Output voltage is programmable with 1.23V of standard voltage
supply internal, and using externally connected components,
output voltage (FB) can be set up at will.
With a 300KHz switching frequency, the size of the external
components can be reduced. Control switches from PFM to PWM
during light loads with the AP1609 (PWM/PFM switchable) and
the series are highly efficient from light loads to large output
currents.
During stand-by time (CE pin “Low”), current consumption is
reduced to 1µA.
Ordering Information
AP 1609 S X - 13
Package PackingLead Free
S : SOP-8L
L : Lead Free
G : Green
Device
AP1609SL-13 S SOP-8L 2500/Tape & Reel -13
Lead-free
Package
Code
Packaging
(Note 2)
AP1609SG-13 S SOP-8L 2500/Tape & Reel -13
Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf
.
.
AP1609 Rev. 2 1 of 9 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
13 : Tape & Reel
13” Tape and Reel
Quantity Part Number Suffix
Pin Assignments
( Top View )
AP1609
PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER
CE
Vcc
FB
PGND
1
2
3
4
SOP-8L
8
GND
GND
7
LX
6
5
LX
Pin Descriptions
Pin Name Pin Number Description
Chip Enable:
CE 1
Vcc 2 IC signal power supply pin
FB 3 Feedback pin
PGND 4 Power MOSFET GND
LX 5, 6
GND 7, 8 GND Pin
AP1609 Rev. 2 2 of 9 FEBRUARY 2009
H: Enable
L: Disable
Switch Pin. Connect external inductor/diode here. Minimize
trace area at this pin to reduce EMI.
www.diodes.com © Diodes Incorporated
Block Diagram
AP1609
PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER
Vcc
FB
Phase
Compensation
+
+
-
-
CE
Vref with
CE
PWM/PFM
Controller
PWM
Comparator
Ramp Wave
Generator,
OSC
Buffer,
Driver
GND
PGND
Absolute Maximum Ratings
Symbol Parameter Ratings Units
VCC V
VFB FB Pin Voltage -0.3 ~ V
VCE CE Pin Voltage -0.3 ~ V
VSW Switch Voltage (LX to GND) -0.3 ~ 18 V
ILX Switch Current -3 ~ 0.2 A
P
Continuous Total Power Dissipation 1200 mW
D
T
Operating Ambient Temperature -20 ~ +80
OPR
T
Storage Temperature -20 ~ +125
STG
Pin Voltage -0.3 ~ 7 V
IN
+0.3 V
CC
+0.3 V
CC
LX
o
C
o
C
AP1609 Rev. 2 3 of 9 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Loading...