DC-DC Step down Converters

ams Step down Converters portfolio is optimized for highest efficiencies of up to 96%.High switching speeds enable the use of very small external inductors. The product range comprises also buck converters dedicated for RF PA supply for WDCMA and 3G systems. Furthermore the DCDC buck converter portfolio covers high voltages of up to 32V.

Part No.
Description
Datasheet
Price (1k)*
Buy
Sample
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Input Voltage
Output Voltage
Output Current
Efficiency
Iq
Architecture
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Package
             
V
V
mA
%
µA
kHz
/SHDN
POK
AS1324 DC-DC Step-Down Converter, 600mA, 1.5MHz Download Datasheet $ 0.59
Design It!
2.7 to 5.5
0.6 to Vin
600
96
35
fixed Frequency, sync.
1500
√
TSOT23-5
AS1328 3A DC-DC Step-Down Converter in 3x3 TDFN Package Download Datasheet $ 1.30
 
2.7V to 5.5V
0.6V to 5.5V
3000
96
25
fixed Freq, sync
1500
√
√
Battery Monitoring
TQFN (3x3mm) 16-pin
AS1332 DC-DC Step-Down Converter 650mA for RF PA supply Download Datasheet $ 1.59
 
2.7 to 5.5
1.3 to 3.16
650
96
1000
fixed Frequency, sync.
2000
√
Dynamical
Voltage Control
WL-CSP-8
AS1333 DC-DC Step-Down Converter 650mA for RF PA supply Download Datasheet $ 1.59
 
3.25 to 5.5
3.09
650
96
1000
fixed Frequency, sync.
2000
√
Low Noise,
Low Output
Voltage Ripple
WL-CSP 8-pin
AS1334 DC-DC Step-Down Converter, 650mA Ultra-Low Ripple, Download Datasheet $ 1.59
Design It!
3.25 to 5.5
1.2 to 3.4
650
96
1000
fixed Frequency, sync.
2000
√
√
Low Noise,
Low Output
Voltage Ripple
TDFN(3x3)-8
AS1335 DC-DC Step-down Converter, Iout=1.5A 1.5MHz Download Datasheet $ 0.77
 
2.6 to 5.25
0.6 to 5.25
1500
96
400
fixed Frequency, sync.
1500
√
TDFN(3x3)-10
AS1339 DC-DC Step-Down Converter 650mA , 2x10mA LDOs for RF PA supply Download Datasheet $ 1.49
 
2.7 to 5.5
0.8 to 3.75
650
96
4500
fixed Frequency, sync.
2000
√
dynamical Voltage
Control for RF-PA supply,
WCDMA/NCDMA
WL-CSP-16
AS1341 HV DC-DC Step-down Converter 20V, 600mA Download Datasheet $ 1.56
Design It!
4.5 to 20
1.25 to Vin
600
96
12
Hysteretic, async
<250
√
√
100% Duty Cycle
TDFN(3x3)-8
AS1346 AS1346 Dual 1.2A and 0.5A Step Down Converter Download Datasheet $ 1.08
Design It!
2.7V to 5.5
1.2 to 3.6
1200 and 500
95
2000
fixed Frequency, sync
2000
√
√
TDFN(3x3)-12
AS1347 AS1347 Dual 0.5A and 0.5A Step Down Converter Download Datasheet $ 0.90     Design It!
2.7V to 5.5
1.2 to 3.6
500 and 500
95
2000
fixed Frequency, sync
2000
√
√
TDFN(3x3)-12
AS1348 AS1348 Dual 0.5A and 0.95A Step Down Converter Download Datasheet $ 1.05      
2.7V to 5.5
1.2 to 3.6
500 and 950
95
2000
fixed Frequency, sync
2000
√
√
TDFN(3x3)-12
AS1349 AS1349 Dual 1.2A and 1.2A Step Down Converter Download Datasheet $ 1.26     Design It!
2.7V to 5.5
1.2 to 3.6
1200 and 1200
95
2000
fixed Frequency, sync
2000
√
√
TDFN(3x3)-12
AS7620 HV DC-DC Step-Down Converter, 32V, with Dual Power Monitor Download Datasheet $ 1.36
Design It!
3.6 to 32
AS7620-A: 1.2 to Vin
AS7620-B: 3.3
500
90
30
Hysteretic, async
>250
√
√
Early Power Fail Warning
100% Duty Cycle
QFN(4x4)-12

* This list pricing is BUDGETARY, for comparing similar parts. Prices are per unit on the basis of 1k pieces in U.S. dollars and subject to change, net of applicable taxes. Quantity pricing may vary substantially due to package types and international prices may differ due to local duties, taxes, fees, and exchange rates.