薄型降圧DC/DCスイッチングレギュレータ

薄型・高速負荷応答
Thin · Fast Transient Response
薄型降圧DC/DCスイッチングレギュレータ
Thin Buck DC/DC Switching Regulators
BD91364AMUU
Features
●固定オンタイム制御により業界最高クラスの負荷応答特性を実現
Fixed ON-time control enables industry-leading load response characteristics
●低背型パッケージの採用により薄型機器への搭載に最適
Adoption of low-profile package, making it ideal for installation in
thin equipment
●業界最高クラスの効率94%を実現 (VIN 5V, VOUT 3.3V, IO 1A)
VQFN20U4040M
Provides class-leading 94% efficiency (VIN=5V, VOUT=3.3V, IO=1A)
Applications
Application Circuit Diagram
●FPGA、マイクロプロセッサなどの降圧電源
Buck power supplies for FPGAs and MCUs
●分散型電源システム
Distributed power systems
●二次側電源
Secondary power supplies
Fast Transient Response
High Efficiency
100
業界最高クラスの負荷応答特性を実現
90
Superior load response characteristics
80
VO=3.3V
従来品
Load
Current
1A / div
BD91364AMUU
VIN : 5V, VO : 1.2V
Output
Voltage
50mV / div
EFFICIENCY :η[%]
70
VIN : 5V, VO : 1.2V
8.5mV
88.5mV
VO=1.5V
VO=1.0V
60
50
全負荷領域で高効率
40
High efficiency operation
across all load regions
30
Conditions
Condition
VIN =
5.0V
20
IO = 1A → 3A → 1A
100μsec / div
VIN=5.0V
10
IO = 1A → 3A → 1A
0
0.001
100μsec / div
0.01
0.1
1
10
OUTPUT CURRENT : IOUT [A]
Lineup
Part No.
BD91364AMUU
Input
Voltage
Maximum
Rating
(V)
Output
Current
(A)
Input
Voltage
Range
(V)
Output
Voltage
(V)
Switching
Frequency
(MHz)
Control
Mode
7
5
2.9 to 5.5
0.8 to
(VIN × 0.8)
1.7
Hysteresis
Power
Good
✓
Features
High
Adjustable
Synchronous Efficiency Over-Current
Soft
Light Load Protection
Rectifier
Start
Mode
✓
✓
✓
Latch
Operating
Junction
Temperature
Thermal
Range
Protection
(˚C)
Feed back
Package
(mm)
VQFN20U4040M
–40 to +105 (4.0 × 4.0 × 0.5)

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