Multiple Output Regulators

Voltage conversion and regulation plays a key part in electronics design. In the past, the supply of power rails was more of an afterthought. But today’s designs are more focused on highly efficient power conversion and control, combined with optimization of costs, solution size, and robustness.

Multiple output regulators provide two or more outputs from a single input supply. Outputs can be derived from a combination of buck, LDO, boost, or charge pump topologies depending on the application requirements. Automotive and non-automotive devices are available with a variety of package types, most with exposed pad for excellent thermal dissipation.

Part Number Topology Input Voltage (V)  Output Current Packages
A4401K Flyback 7 to 40 Scalable SOIC-8
A4402K Buck + LDO 6 to 50

Buck-1 A / LDO-0.25 A

eTSSOP-16 
A4405K Internal Buck + 3 LDO 5.5 to 50 ~300mA/ch for 5 V
up to ~500 mA for 3.3 V
up to ~400 mA for 5 VP
eTSSOP-20
A4406K Internal Buck + 2 LDO 5.5 to 50 ~300mA/ch for 5 V
up to ~500 mA for 3.3 V
eTSSOP-20
A4407K Internal Buck + 4 LDO 5.5 to 50 ~300mA/ch for 5 V
up to ~250 mA for 5 VP
up to ~500 mA for 3.3 V
up to ~700 mA for Vadj
eTSSOP-24
A4490 3 × Buck 4.5 to 34 Each output rated at 2.2 A peak switch current 4×4 mm QFN-20
A4491 3 × Buck 4.5 to 23 Each output rated at 2.2 A peak switch current 4×4 mm QFN-20
A4492 3 × Buck 4.5 to 34 Each output rated at 2.2 A peak switch current 4×4 mm QFN-20
A8450K Internal Buck + 3 LDO 6 to 45 1.2 V to 3.3 V @ 200 mA,
3.3 V @ 200 mA,
5 V @ 200 mA
SOIC-24
A8600K Four Buck Regulators
+2 high-side switches
4.4 to 40 2.5A peak for regulators 1-3
4 A peak for controller 4
(all thermally limited)
QFP-48
A8601K Internal boost
+3 × LDO
+2 × Charge Pump
 4 to 5.5 DVDD: 2.4 to (VIN-0.6) V @ 50 mA,
AVDD: 2.4 to 14.8 V @ 200 mA (including VCOM),
VCOM: 2.9 to 6.8 V,
VGH: 2.4 to 26 V @ 14 mA,
VGL: -12.85 to -5 V @ 14 mA
eTSSOP-28

 Note: "K" suffix denotes automotive grade product

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