DC/DC Converters (Switching Regulators)

Applications
•Battery-powered
devices
•USB-powered
peripherals
• Consumer, industrial,
medical, automotive:
battery-powered or
wireline
Features
• High efficiency at light
and maximum loads
• Small form factor
devices
• Ease of design
•Cost-effective
solutions
DC/DC Converters
(Switching Regulators)
Skyworks’ broad product portfolio includes high-efficiency, pulse width modulation
(PWM) switch-mode voltage regulators ideal for a wide variety of applications such as
smartphones, portable navigation devices (PNDs), notebook computers, set-top boxes,
digital still cameras, and other portable electronic devices. Step-up and step-down
converter solutions are available for a range of output power, optimized in both size and
performance for specific power levels. The switch-mode products utilize high switching
frequencies to minimize output inductor and capacitor size. Internal compensation
eliminates the need for additional external components. These products provide optimal
light load efficiency and minimum light load ripple. In addition to excellent efficiency,
many SwitchReg™ products offer fast turn-on time and fast transient response
capabilities. Taking advantage of advanced modular bipolar CMOS DMOS (BCD) processes
allows very low resistance switches, and eliminates the need for special packages that
require additional thermal relief.
An application engineering team is available to assist you and with your design efforts.
Application notes and block diagrams are accessible on Skyworks’ Web site:
www.skyworksinc.com.
High Efficiency Performance
Application Diagrams
Figures 1 and 2 compare the efficiency performance of
a switching regulator with light load mode (LLM), and
and with pulse width modulation (PWM) mode only.
Figure 1 displays the regulator efficiency with a PWM
only mode. Figure 2 displays the regulator efficiency with
a LLM. This mode extends the efficiency of the regulator
under standby power (light load) conditions, addressing
customer demands for longer battery life required in
mobile applications.
Figures 3 and 4 show step-up (boost) converter and
step-down (buck) converter application diagrams.
VIN
VOUT
L1
OUT
LX
VIN
EN
C1
R2
Step-up
DC-DC Converter
FB
GND
C2
R3
PGND
VIN = 2.7 V
100
VIN = 3.3 V
VIN = 3.6 V
90
Figure 3. Step-up (Boost) Converter Application Diagram
80
Efficiency (%)
70
60
VIN
50
40
VIN
L
ON/OFF EN
20
10
GND
10
100
VOUT
VOUT
CIN
30
0
SW
Step-down
DC-DC Converter
FB
Mode
1,000
Load Current (mA)
Figure 4. Step-down (Buck) Converter Application Diagram
Efficiency vs. Load Current
Figure 1. Pulse Width Modulation Mode
VIN = 3.3 V
VIN = 2.7 V
100
VIN = 3.6 V
90
80
Efficiency (%)
70
60
LLM Efficiency
Improvement
50
40
30
20
10
0
10
100
1,000
Load Current (mA)
Efficiency vs. Load Current
Figure 2. Light Load Mode
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2
Product Specifications
Electrical specifications for our step-up and step-down converter products are provided in Tables 1 and 2 below.
Table 1. Step-up Converters
Part Number
Min. VIN
(V)
Max. VIN
(V)
Min. VOUT
(V)
Max. VOUT
(V)
IOUT
(mA)
fOSC
(kHz)
Typ. IQ
(μA)
Package
(mm)
AAT1210
2.7
5.50
VIN
18.0
900
2000
250
TDFN34 16L 3 x 4 x 0.75
AAT1217
0.5
VOUT
2.5
5.5
600
1200
300
TSOT-23 6L 2.9 x 2.8 x 1
SOT23 6L 2.85 x 2.8 x 1.2
AAT1218
0.5
6.00
2.5
5.5
1000
1200
300
TDFN33 12L 3 x 3 x 0.75
AAT1219
2.4
VOUT + 0.25
3.0
5.0
2000
1200
1200
58
TDFN33 12L 3 x 3 x 0.75
AAT1230
2.7
5.50
18
18.0
100
2000
40
TSOPJW 12L 3 x 2.85 x 1.02
TDFN34 16L 4 x 3 x 0.75
AAT1232
2.7
5.50
N/A
24.0
100
2000
40
TSOPJW 12L 3 x 2.85 x 1.02
TDFN34 16L 4 x 3 x 0.75
AAT1275
2.7
5.00
VIN
5.5
500
2000
100
TSOPJW 12L 3 x 2.85 x 1.02
TDFN34 16L 4 x 3 x 0.75
AAT1275A
2.7
VOUT
VIN
5.5
500
2000
100
TSOPJW 12L 3 x 2.85 x 1.02
TDFN34 16L 4 x 3 x 0.75
AAT1276
2.7
5.00
VIN
5.5
500
2000
100
TSOPJW 12L 3 x 2.85 x 1.02
TDFN34 16L 4 x 3 x 0.75
AAT2215
2.4
5.25
3.0
5.5
3000
600
55
TDFN33 12L 3 x 3 x 0.75
AAT2404
10.8
24.00
VIN + 3
100
5000
400
1000
TQFN34-24L 3 x 4 x 0.75
AAT3125
2.7
5.50
4.6
5.25
100
750
60
QFN44 16L 4 x 4 x 0.93
Table 2. Step-down Converters
Min. VIN
(V)
Max. VIN
(V)
Min. VOUT
(V)
Max. VOUT
(V)
IOUT
(mA)
fOSC
(kHz)
Typ. IQ
(μA)
Package
(mm)
AAT1106
2.5
5.5
0.6
VIN
600
1500
270
TSOT23 5L 2.8 x 2.9 x 0.95
AAT1110
2.7
5.5
0.6
VIN
800
1400
27
SC70JW-8 2 x 2.1 x 1.1
AAT1112
2.7
5.5
0.6
VIN
1500
1400
42
TDFN33 12L 3 x 3 x 0.75
TSOPJW 12L 3 x 2.85 x 1
AAT1120
2.7
5.5
0.6
VIN
500
1500
30
STDFN 8L 2 x 2 x 0.55
AAT1121
2.7
5.5
0.6
VIN
250
1500
30
TDFN 8L 2 x 2 x 0.85
STDFN22 8L 2 x 2 x 0.55
AAT1123
2.7
5.5
0.6
0.6
600
1000
25
SC70JW 8L 2 x 2.1 x 1.1
AAT1126
2.7
5.5
0.6
0.6
600
1000
25
SOT-23 5L 2.85 x 2.8 x 1.2
AAT1130
2.7
5.5
0.6
1.8
400
2500
60
SC70JW 10L 2 x 2.2 x 1.1
AAT1138
2.5
5.5
0.6
VIN
2000
1200
300
TDFN 16L 3 x 4 x 0.75
AAT1141
2.7
5.5
0.6
VIN
600
2000
35
SOT-23 5L 2.85 x 2.8 x 1.2
TSOT23 5L 2.9 x 2.8 x 0.95
AAT1142
2.7
5.5
0.6
2.0
800
2200
35
TSOPJW 12L 3 x 2.85 x 1
TDFN33 12L 3 x 3 x 0.75
AAT1143
2.7
5.5
0.6
0.6
400
1000
25
SC70JW 8L 2 x 2.1 x 1.1
AAT1145
2.5
5.5
0.6
VIN
1500
1500
300
TDFN33 10L 3 x 3 x 0.75
AAT1146
2.7
5.5
0.6
VIN
400
1400
27
SC70JW-8 2.0 x 2.1 x 1.1
SOT-23 5L 2.85 x 2.8 x 1.2
AAT1147
2.7
5.5
0.6
VIN
400
1400
160
–
AAT1149
2.7
5.5
1.000
VIN
400
3000
45
SC70JW 8L 2 x 2.1 x 1.05
WLCSP 5L 1.235 x 0.91 x 0.58
Part Number
Skyworks’ Green™ products are compliant to all applicable materials legislation and are halogen-free. For additional information, please refer to Skyworks Definition of Green™, document
number SQ04-0074. New products indicated in blue, bold are continually being introduced at Skyworks.
WWW.SKYWORKSINC.COM
3
Table 2. Step-down Converters (Continued)
Min. VIN
(V)
Max. VIN
(V)
Min. VOUT
(V)
Max. VOUT
(V)
IOUT
(mA)
fOSC
(kHz)
Typ. IQ
(μA)
Package
(mm)
AAT1149A
2.2
5.5
1.875
1.875
400
2200
3000
WLCSP 5L 1.235 x 0.91 x 0.58
AAT1149B
2.2
5.5
1.800
1.800
400
2200
45
WLCSP 5L 1.235 x 0.91 x 0.58
AAT1150
2.7
5.5
1.000
4.200
1000
1000
160
MSOP 8L 4.9 x 3 x 0.95
AAT1151
2.7
5.5
1.000
4.200
700
850
210
MSOP 8L 4.9 x 3 x 0.95
QFN33 16L 3 x 3 x 0.9
AAT1153
2.5
5.5
0.600
VIN
2000
1200
300
TDFN33 10L 3 x 3 x 0.75
AAT1154
2.7
5.5
1.000
4.200
3000
1000
630
SOP 8L 4.9 x 6 x 1.55
AAT1155
2.7
5.5
1.000
4.200
2500
1000
630
MSOP 8L 4.9 x 3 x 0.95
AAT1157
2.7
5.5
0.800
0.800
1200
1000
160
QFN33 16L 3 x 3 x 0.85
AAT1160
4.0
13.2
0.600
VIN
3000
800
150
TDFN34 16L 3 x 4 x 0.75
AAT1161
4.0
13.3
0.600
VIN
3000
800
150
TDFN33 14L 3 x 3 x 0.75
AAT1162
4.0
13.4
0.600
VIN
1500
800
150
TDFN34 16L 3 x 4 x 0.75
AAT1171
2.7
5.5
0.600
3.600
600
2000
420
TDFN33 12L 3 x 3 x 0.75
WLCSP 12L 2.235 x 1.535 x 0.645
AAT1184
6.0
24.0
1.500
5.500
2500
490
600
TSOPJW 12L 3 x 2.85 x 1
AAT1185
6.0
24.0
1.500
5.500
1000
490
1000
TSOPJW 14L 2.85 x 3.05 x 1.05
AAT1189
6.0
24.0
1.500
5.500
2500
490
600
TDFN34 16L 3 x 4 x 0.85
AAT2113B
2.7
5.5
1.000
2.500
1500
3300
55
FTDFN22 8L 2 x 2 x 0.75
AAT2114A
2.7
5.5
1.000
VIN
2500
3000
70
QFN33 16L 3 x 3 x 0.90
AAT2120
2.7
5.5
0.600
VIN
500
1800
45
STDFN22 8L 2 x 2 x 0.55
AAT2138
2.7
5.5
3.000
VIN
2500
2800
90
TDFN 14L 3 x 3 x 0.75
AAT2146
2.7
5.5
0.600
VIN
600
2000
37
SC70JW 8L, 2.0 x 2.1 x 1.05
AAT2146W
2.7
5.5
0.600
VIN
600
2000
37
–
AAT2148
2.7
5.5
0.600
VIN
1000
2000
37
QFN33 16L 3 x 3 x 0.85
AAT2153
2.7
5.5
0.600
VIN
2500
1400
42
QFN33 16L 3 x 3 x 0.85
AAT2158
2.4
5.5
0.600
VIN
1500
1400
42
QFN33 16L 3 x 3 x 0.90
AAT2500
2.7
5.5
0.6
VIN
400;
LDO 300
1000
25; LDO 70
TDFN33 12L 3 x 3 x 0.75
AAT2500M
2.7
5.5
0.6
VIN
400;
LDO 300
1800
130
TSOPJW 12L 3 x 2.85 x 1.02
AAT2503
2.7
5.5
0.6
VIN
800;
LDO 300
2000
85
QFN34 20L 3 x 4 x 0.93
AAT2504
2.7
5.5
0.6
VIN
800;
LDO 300
2000
80
QFN34 20L 3 x 4 x 0.925
AAT2505
2.7
5.5
0.6
VIN
600;
LDO 300
1400
27; LDO 70
TDFN33 12L 3 x 3 x 0.75
AAT2506
2.7
5.5
0.6
VIN
600;
LDO 300
1000
25; LDO 70
TDFN33 12L 3 x 3 x 0.75
AAT2510
2.7
5.5
0.60
VIN
400/ch
1000
25/ch
TDFN33 12L 3 x 3 x 0.75
AAT2511
2.7
5.5
0.60
VIN
600/ch
1000
25/ch
TDFN33 12L 3 x 3 x 0.75
AAT2512
2.7
5.5
0.60
VIN
400/ch
1400
27/ch
TDFN33 12L 3 x 3 x 0.75
AAT2513
2.7
5.5
0.60
VIN
600/ch
1700
60
QFN33 16L 3 x 3 x 0.85
AAT2514
2.5
5.5
0.60
VIN
600/ch
1500
500
TDFN33 10L 3 x 3 x 0.75
AAT2515
2.7
5.5
0.60
VIN
600/ch
1400
27
TDFN33 12L 3 x 3 x 0.75
Part Number
Skyworks’ Green™ products are compliant to all applicable materials legislation and are halogen-free. For additional information, please refer to Skyworks Definition of Green™, document
number SQ04-0074. New products indicated in blue, bold are continually being introduced at Skyworks.
WWW.SKYWORKSINC.COM
4
Table 2. Step-down Converters (Continued)
Part Number
Min. VIN
(V)
Max. VIN
(V)
Min. VOUT
(V)
Max. VOUT
(V)
IOUT
(mA)
fOSC
(kHz)
Typ. IQ
(μA)
Package
(mm)
AAT2522
2.7
5.5
0.60
VIN
3000/ch
1400
90
TDFN34 16L 3 x 4 x 0.85
AAT2687
6.0
24.0
1.50
5.5
4500;
LDO 600
490
600
TQFN45 24L 4 x 5 x 0.75
AAT2688
6.0
24.0
0.80
5.5
4500;
LDO 600
490
600
TQFN45 24L 4 x 5 x 0.75
AAT2689
6.0
24.0
1.50
5.5
2500;
LDO 600
490
600
TDFN34 16L 3 x 4 x 0.75
AAT2713
2.7
5.5
0.60
VIN
600/ch
1700
70
QFN33 16L 3 x 3 x 0.85
AAT2749
2.3
5.5
1.80
1.0
600;
LDO 300
3000
100
WLCSP 9L 1.35 x 1.36 x 0.50
(205 µm bump in 400 µm pitch)
AAT2782
2.7
5.5
0.60
VIN
1200;
600; 400
1300
N/A
TDFN34 16L 3 x 4 x 0.85
AAT2783
2.7
5.5
0.60
VIN
1000; 400;
LDO 400
1300
N/A
TDFN34 16L 3 x 4 x 0.85
AAT2784
2.7
5.5
0.60
VIN
1500; 300
1800
45–50
TDFN34 16L 3 x 4 x 0.85
AAT2785
2.7
5.5
0.60
VIN
1500; 600
1800
45–50
TDFN34 16L 3 x 4 x 0.85
AAT2786
2.5
5.5
0.60
VIN
1500;
LDO 150
1500
40
TDFN34 16L 3 x 4 x 0.85
AAT2789
2.7
5.5
0.60
VIN
1700; 800
1400
42
TDFN34 16L 3 x 4 x 0.85
AAT3183
2.7
5.5
1.34
1.5
300
2000
35
SC70JW 8L 2 x 2.1 x 1.1
SKY87000-11
2.7
5.5
0.40
4.25
2500
2000
135
WLCSP 9B 1.42 x 1.49
SKY87000-13
2.7
5.5
0.40
4.25
2000
2000
135
WLCSP 9B 1.42 x 1.49
SKY87201-11
2.7
5.5
0.60
VIN
600
2000
37
STDFN 8L 2.0 x 2.1 x 1.05
SKY87250
2.7
5.5
0.60
VIN
400
2000
40
DLN 8L 2.4 x 2.4 x 0.9
SKY87608
4.5
28.0
0.90
0.8 x VIN
3000
450
1600
SOP 8L 4.54 x 6 x 1.75
Skyworks’ Green™ products are compliant to all applicable materials legislation and are halogen-free. For additional information, please refer to Skyworks Definition of Green™, document
number SQ04-0074. New products indicated in blue, bold are continually being introduced at Skyworks.
WWW.SKYWORKSINC.COM
5
Reference Materials
Application Notes
For additional information, please refer to the following
Application Notes and Published Articles.
Setting the Current Limit for the AAT1184/85/89,
AAT2687/88/89 High Voltage Step-Down Family, 202375
Design Type III Compensation Network for Voltage Mode
Step-down Converters, 202376
Output Inductor Selection for the AAT115X Series Buck
Converter, AN-108
Output Capacitor Selection for the AAT115X Series Buck
Converter, AN-106
Block Diagrams
Please visit http://www.skyworksinc.com/BlockDiagrams_
Power_Management.aspx for Skyworks, complete library
of Power Management block diagrams.
You may also visit http://www.skyworksinc.com for the
full list of Skyworks’ block diagrams representing our
broad product portfolio.
Join Our Customer Email Program Today
Skyworks is continually releasing new products. Join our
customer email program instantly by scanning the QR
code with your smartphone.
Gerber Files
Please refer to our Web site for Gerber files, which are
available for some DC/DC converter products.
Our DC/DC converter products leverage Skyworks’
extensive design knowledge, technical leadership,
manufacturing expertise, and superior quality.
For the latest information, please visit our Web site at
www.skyworksinc.com, contact your local sales office,
or email us at [email protected]
An application engineering team is available to assist you
with your design efforts.
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6
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Adamstown
Greensboro
Taipei
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Sales Offices
Design Centers
Manufacturing
www.skyworksinc.com
USA
EUROPE
ASIA • PACIFIC
Headquarters: Massachusetts
Skyworks Solutions, Inc.
20 Sylvan Road
Woburn, MA 01801
Telephone: (781) 376-3000
Fax: (781) 376-3100
[email protected]
France
Skyworks Solutions, Inc.
60 rue Saint André des Arts
Bâtiment D
75006 Paris
France
Telephone: +33 1 43548540
Fax: +33 1 43540005
[email protected]
China
Skyworks Solutions, Inc.
Room 2901-02, Chong Hing
Finance Center
No. 288 Nanjing Road (W)
Shanghai 200003 China PRC
Telephone: +86 21 23066230
ext. 60167
Fax: +86 21 33663398
[email protected]
California
Skyworks Solutions, Inc.
5221 California Avenue
Irvine, CA 92617
Telephone: (949) 231-3000
Fax: (949) 231-3206
[email protected]
Skyworks Solutions, Inc.
3230 Scott Boulevard
Santa Clara, CA 95054
Telephone: (408) 330-1400
Fax: (408) 737-4611
[email protected]
Maryland
Skyworks Solutions, Inc.
5520 Adamstown Road
Adamstown, MD 21710
Telephone: (301) 695-9400
Fax: (301) 695-7065
[email protected]
United Kingdom
Skyworks Solutions, Ltd.
South Building
Walden Court
Parsonage Lane
Bishops Stortford
Hertfordshire CM23 5DB
United Kingdom
Telephone: +44 7585 964479
Fax: +44 01279 464201
[email protected]
Finland
Skyworks Solutions, Inc.
Keilaranta 16 (5th Floor)
FIN-02150 Espoo
Finland
Telephone: +358 9251 07131
Fax: +358 9 2510 7129
[email protected]
Skyworks Solutions, Inc.
Room 2701, 27/F Tower 3
Kerry Plaza
No. 1 Zhongxinsi Road
Futian District
Shenzhen 518048 China PRC
Telephone: +86 755 8828 8399
Fax: +86 755 8828 8358
[email protected]
Skyworks Solutions, Inc.
Suite 1315, Tower B, COFCO Plaza, No. 8
Jianguomennei Avenue
Dongcheng District
Beijing 100005 China PRC
Telephone: +8610 652 60859
ext. 61602
Fax: +8610 652 61358
[email protected]
Japan
Skyworks Solutions Co., Ltd.
Tokyo Opera City Tower 36F
3-20-2 Nishi-Shinjuku
Shinjuku-ku
Tokyo, 163-1436
Japan
Telephone: +81 3 5308 5180
Fax: +81 3 5308 5190
[email protected]
Korea
Skyworks Solutions, Inc.
12th Floor West Wing Posco Center
892 Daechi 4-Dong, Kangnam-Gu
Seoul, Korea 135-777
Telephone: +82 2 3490 3800
Fax: +82 2 553 5459
[email protected]
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Skyworks Global Pte Ltd.
10 Ang Mo Kio Street 65
#05-15/16 Techpoint
Singapore 569059
Telephone: +65 64031971
Fax: +65 64031931
[email protected]
Taiwan
Skyworks Solutions, Inc.
4 F, #198, Section 2
Tun Hwa S. Road
Taipei 106, Taiwan ROC
Telephone: +8862 5559 8992
Fax: +8662 2735 6508
[email protected]
Skyworks Solutions, Inc.
20 Sylvan Road, Woburn, MA 01801
USA: (781) 376-3000 • Asia: 886 2 2735 0399
Europe: 33 (0)1 43548540 • Fax: (781) 376-3100
Email: [email protected] • www.skyworksinc.com
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