Datasheet LTC3406AB (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT |
| 页数 / 页 | 18 / 1 — FeaTures. DescripTion. High Efficiency: Up to 96%. 600mA Output Current. … |
| 文件格式/大小 | PDF / 721 Kb |
| 文件语言 | 英语 |
FeaTures. DescripTion. High Efficiency: Up to 96%. 600mA Output Current. 2.5V to 5.5V Input Voltage Range
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LTC3406AB 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT
FeaTures DescripTion
n
High Efficiency: Up to 96%
The LTC®3406AB is a high efficiency monolithic synchro- n
600mA Output Current
nous buck regulator using a constant frequency, current n
2.5V to 5.5V Input Voltage Range
mode architecture. Supply current with no load is 200µA, n
1.5MHz Constant Frequency Operation
dropping to <1µA in shutdown. The 2.5V to 5.5V input n
No Schottky Diode Required
voltage range makes the LTC3406AB ideally suited for n
Low Dropout Operation: 100% Duty Cycle
single Li-Ion battery-powered applications. 100% duty n Low Quiescent Current: 200µA cycle provides low dropout operation, extending battery n ±2% 0.6V Reference run time in portable systems. PWM pulse skipping mode n Shutdown Mode Draws <1µA Supply Current operation provides very low output ripple voltage for noise n Internal Soft-Start Limits Inrush Current sensitive applications. Refer to LTC3406A for applications n Current Mode Operation for Excellent Line and that require Burst Mode® operation. Load Transient Response Switching frequency is internally set at 1.5MHz, allowing n Overtemperature Protected n the use of small surface mount inductors and capacitors. Low Profile (1mm) ThinSOTTM Package The internal synchronous switch increases efficiency and
applicaTions
eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.6V feedback n Cellular Telephones reference voltage. The LTC3406AB is available in a low n Satellite and GPS Receivers profile (1mm) ThinSOT package. n Wireless and DSL Modems L, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property n Digital Still Cameras of their respective owners. Protected by U.S. Patents including 5481178, 6580258. n Media Players n Portable Instruments
Typical applicaTion Efficiency vs Load Current
100 V 2.2µH OUT = 1.8V 90 V 1.8V, 600mA IN VIN SW 22pF VOUT 4.7µF 80 CER LTC3406AB 10µF CER 70 RUN VFB 60 619k GND 50 309k EFFICIENCY (%) 40 3406AB TA09 30 VIN = 2.7V 20 VIN = 3.6V VIN = 4.2V 100.1 1 10 100 1000 OUTPUT CURRENT (mA) 3406B TA14 3406abfb For more information www.linear.com/LTC3406AB 1
FeaTures DescripTion
n
High Efficiency: Up to 96%
The LTC®3406AB is a high efficiency monolithic synchro- n
600mA Output Current
nous buck regulator using a constant frequency, current n
2.5V to 5.5V Input Voltage Range
mode architecture. Supply current with no load is 200µA, n
1.5MHz Constant Frequency Operation
dropping to <1µA in shutdown. The 2.5V to 5.5V input n
No Schottky Diode Required
voltage range makes the LTC3406AB ideally suited for n
Low Dropout Operation: 100% Duty Cycle
single Li-Ion battery-powered applications. 100% duty n Low Quiescent Current: 200µA cycle provides low dropout operation, extending battery n ±2% 0.6V Reference run time in portable systems. PWM pulse skipping mode n Shutdown Mode Draws <1µA Supply Current operation provides very low output ripple voltage for noise n Internal Soft-Start Limits Inrush Current sensitive applications. Refer to LTC3406A for applications n Current Mode Operation for Excellent Line and that require Burst Mode® operation. Load Transient Response Switching frequency is internally set at 1.5MHz, allowing n Overtemperature Protected n the use of small surface mount inductors and capacitors. Low Profile (1mm) ThinSOTTM Package The internal synchronous switch increases efficiency and
applicaTions
eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.6V feedback n Cellular Telephones reference voltage. The LTC3406AB is available in a low n Satellite and GPS Receivers profile (1mm) ThinSOT package. n Wireless and DSL Modems L, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property n Digital Still Cameras of their respective owners. Protected by U.S. Patents including 5481178, 6580258. n Media Players n Portable Instruments
Typical applicaTion Efficiency vs Load Current
100 V 2.2µH OUT = 1.8V 90 V 1.8V, 600mA IN VIN SW 22pF VOUT 4.7µF 80 CER LTC3406AB 10µF CER 70 RUN VFB 60 619k GND 50 309k EFFICIENCY (%) 40 3406AB TA09 30 VIN = 2.7V 20 VIN = 3.6V VIN = 4.2V 100.1 1 10 100 1000 OUTPUT CURRENT (mA) 3406B TA14 3406abfb For more information www.linear.com/LTC3406AB 1