LTC3406-1.2 Series

2.25MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

Catalog

2.25MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

Part	Current - Output	Output Type	Voltage - Output (Min/Fixed)	Output Configuration	Mounting Type	Function	Topology	Number of Outputs	Voltage - Input (Max) [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Output (Max) [Max]	Voltage - Input (Min) [Min]	Frequency - Switching	Package / Case	Output Type
Analog Devices LTC3406ES5#TRMPBF	600 mA	Adjustable	0.6 V	Positive	Surface Mount	Step-Down	Buck	1	5.5 V	85 °C	-40 °C	5.5 V	2.5 V	1.5 MHz	SOT-23-5 Thin TSOT-23-5
Analog Devices LTC3406AIS5#TRPBF	600 mA	Adjustable	0.6 V	Positive	Surface Mount	Step-Down	Buck	1	5.5 V	125 ¯C	-40 °C	5.5 V	2.5 V	1.5 MHz	SOT-23-5 Thin TSOT-23-5
Analog Devices LTC3406BES5-1.8#TRPBF	600 mA		1.8 V	Positive	Surface Mount	Step-Down	Buck	1	5.5 V	85 °C	-40 °C		2.5 V	1.5 MHz	SOT-23-5 Thin TSOT-23-5	1.81 mOhm
Analog Devices LTC3406B-2ES5#TRMPBF	600 mA	Adjustable	0.6 V	Positive	Surface Mount	Step-Down	Buck	1	5.5 V	85 °C	-40 °C	5.5 V	2.5 V	2.25 MHz	SOT-23-5 Thin TSOT-23-5
Analog Devices LTC3406AES5#TRMPBF	600 mA	Adjustable	0.6 V	Positive	Surface Mount	Step-Down	Buck	1	5.5 V	85 °C	-40 °C	5.5 V	2.5 V	1.5 MHz	SOT-23-5 Thin TSOT-23-5
Analog Devices LTC3406ES5-1.5#TRMPBF	600 mA		1.5 V	Positive	Surface Mount	Step-Down	Buck	1	5.5 V	85 °C	-40 °C		2.5 V	1.5 MHz	SOT-23-5 Thin TSOT-23-5	1.81 mOhm
Analog Devices LTC3406BES5#TRPBF	600 mA	Adjustable	0.6 V	Positive	Surface Mount	Step-Down	Buck	1	5.5 V	85 °C	-40 °C	5.5 V	2.5 V	1.5 MHz	SOT-23-5 Thin TSOT-23-5
Analog Devices LTC3406ES5-1.2#TRPBF	600 mA		1.2 V	Positive	Surface Mount	Step-Down	Buck	1	5.5 V	85 °C	-40 °C		2.5 V	1.5 MHz	SOT-23-5 Thin TSOT-23-5	1.81 mOhm
Analog Devices LTC3406ES5-1.8#TRMPBF	600 mA		1.8 V	Positive	Surface Mount	Step-Down	Buck	1	5.5 V	85 °C	-40 °C		2.5 V	1.5 MHz	SOT-23-5 Thin TSOT-23-5	1.81 mOhm
Analog Devices LTC3406ABES5#TRMPBF	600 mA	Adjustable	0.6 V	Positive	Surface Mount	Step-Down	Buck	1	5.5 V	85 °C	-40 °C	5.5 V	2.5 V	1.5 MHz	SOT-23-5 Thin TSOT-23-5

Catalog

2.25MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

Key Features

• High Efficiency: Up to 96%

• Very Low Quiescent Current: Only 20µA

• Low Output Ripple Voltage During Burst Mode®Operation

• 600mA Output Current

• 2.5V to 5.5V Input Voltage Range

• 1.5MHz Constant Frequency Operation

• No Schottky Diode Required

• Low Dropout Operation: 100% Duty Cycle

• ±2% 0.6V Reference

• Shutdown Mode Draw ≤1µA Supply Current

• Internal Soft-Start Limits Inrush Current

• Current Mode Operation for Excellent Line and Load Transient Response

• Overtemperature Protected

• Low Profile (1mm) ThinSOT™ Package

Description

The LTC3406B is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages of 1.5V and 1.8V. Supply current with no load is 300µA and drops to <1µA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3406B ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. PWM pulse skipping mode operation provides very low output ripple voltage for noise sensitive applications.Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.6V feedback reference voltage. The LTC3406B is available in a low profile (1mm) ThinSOT package. Refer to LTC3406 for applications that require Burst Mode®operation.VOUTFSWFeaturesLTC3406Adj.1.5MHzBurst ModeLTC3406-1.21.2V1.5MHzBurst ModeLTC3406-1.51.5V1.5MHzBurst ModeLTC3406-1.81.8V1.5MHzBurst ModeLTC3406BAdj1.5MHzBurst Mode DisabledLTC3406B-1.21.2V1.5MHzBurst Mode DisabledLTC3406B-2Adj.2.25MHzBurst Mode DisabledLTC3406AAdj.1.5MHzLow Ripple Burst ModeLTC3406ABAdj.1.5MHzBurst Mode DisabledLTC3406AB-2Adj.2.25MHzBurst Mode DisabledApplicationsCellular TelephonesPersonal Information AppliancesWireless and DSL ModemsDigital Still CamerasMP3 PlayersPortable Instruments