Document
AP6015
High Efficiency Step-Down Low Power DC-DC Converter
Features
High efficiency synchronous step-down converter with greater than 94% • 2.5V to 5.5V operating input voltage range • Adjustable output voltage range from 0.8V to VIN • Fixed output voltage options: 1.8V, 2.5V and 3.3V • Up to 800mA output current • High efficiency over a wide range of load currents • PWM operation mode www.DataSheet4U.com • Internal soft-start function • Typical quiescent current of 150μA • MSOP-10L: Available in “Green” Molding Compound (No Br, Sb) • Lead Free Finish/ RoHS Compliant (Note 1) •
General Description
The AP6015 is the first device in a family of low-noise synchronous step-down DC-DC converters. It is ideally suited for systems powered by either a 1-cell Li-ion battery or a 2- to 3-cell NiCd/ NiMH/ Alkaline battery. The AP6015 is a synchronous PWM converter with integrated N- and P-channel power MOSFET switches. Compared to the asynchronous topology, synchronous rectification offers the benefits of higher efficiency and reduced component count. The high operating frequency of 1MHz allows small inductor and capacitor to be used. This results in small pcb area. During shut-down, the standby current drops to 1μA or less. The AP6015 is available in the 10-pin MSOP package. It operates o o over a free-air temperature range of -40 C to 85 C.
Applications
• • • • • Mobile Handsets PDAs, Ultra Mobile PCs Portable Media Players, Digital Still/Video Cameras USB-based DSL Modems LAN/WLAN/WPAN/WWAN Modules
Ordering Information
AP 6015 - XX M10 G - 13 Voltage Blank : Adj 18 : 1.8V 25 : 2.5V 33 : 3.3V Package M10 : MSOP-10L Lead Free G : Green Packing 13 : Tape & Reel
Device AP6015-XXM10G-13
Notes:
Package Code M10
Packaging (Note 2) MSOP-10L
13” Tape and Reel Quantity Part Number Suffix 2500/Tape & Reel -13
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied, see EU Directive 2002/95/EC Annex Notes. 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.
AP6015 Rev.
2
1 of 18 www.diodes.com
AUGUST 2008
© Diodes Incorporated
AP6015
High Efficiency Step-Down Low Power DC-DC Converter
Pin Assignment
( Top view )
PVCC 1 VCC 2
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10 PGND 9 LX
GND 3 PG 4
8 EN 7 NC 6 CC
FB/Vout
5
MSOP-10L
Pin Descriptions
Pin Name PVCC VCC GND PG FB CC NC EN LX PGND Pin NO. 1 2 3 4 5 6 7 8 9 10 O I I NC I I/O I/O I Supply voltage input Supply bypass pin. A 1μF coupling capacitor should be connected as close as possible to this pin. Ground Power good comparator output. A pull-up resistor should be connected between PG and VO. Feedback pin for the fixed output voltage option. Compensation pin No connect Enable.Pin, H: Enable. L:shutdown Connect the inductor to this pin. Power ground Description
AP6015 Rev.
2
2 of 18 www.diodes.com
AUGUST 2008
© Diodes Incorporated
AP6015
High Efficiency Step-Down Low Power DC-DC Converter
Block Diagram
VCC CC CC
SS TS Bias
PG PG
EN CE
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UVLO
Open drain
Vref=0.8V
ER-AMP
+
FB FB
PG_COM
+
Current Protection
PVCC
PVCC
+
PWM-COM -
Buffer
LX
BANDGAP
Osc
Vramp
PGND
PGND
GND
Notes:
3. The adjustable output voltage version does not use the internal feedback resistor divider. The FB pin is directly connected to the error amplifier.
Absolute Maximum Ratings
Symbol ESD HBM ESD MM PVCC, VCC TJ(MAX) TST TOP Parameter Human Body Model ESD Protection Machine Model ESD Protection Supply Voltage Voltages on pins EN, CC, PG, FB, LX Maximum Junction Temperature Range Storage temperature range Operating Junction Temperature Range Rating 2.5 300 -0.3 to +5.5 -0.3 to VIN +0.3 +150 -65 to +150 -40 to +125 Unit KV V V V o C o C o C
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods ma affect device reliability.
AP6015 Rev.
2
3 of 18 www.diodes.com
AUGUST 2008
© Diodes Incorporated
AP6015
High Efficiency Step-Down Low Power DC-DC Converter
Recommended Operating Conditions
Symbol TA VIN VO L Ci www.DataSheet4U.com Co
Notes:
(TA :-40~85°C)
Parameter Operating Ambient Temperature Range Supply Voltage Output voltage range for adjustable output voltage version Inductor (see Note 4) Input capacitor (see Note 4) Output capacitor (see Note 4) VO ≥ 1.8V
Rating -40 to +85 2.0 to 5.5 0.8 to VI 3.3 10 10
Unit o C V V μH μF μF
4. Refer to application section for further information.
Electrical Characteristics
(TA =25°C)
Over recommended operating free-air temperature range, VI=3.6V, VO=2.5V, IO=300mA, EN=VIN. (unless otherwise noted)
Symbol Supply current
Parameter
Conditions
Min
Typ.
Max
Unit
-20 to 85 oC VIN Input Voltage .