LT8609A Datasheet

Part No.	In Stock	Price	Packaging	SPQ	Marking	MSL	Pins	Temp Range	Package Description
LT8609AEDDM#PBF	182pcs	-	Tube	121	LHJZ		10	-40°C ~ 125°C	10-Lead DFN
LT8609AEDDM#TRPBF	2273pcs	-	Reel	2500	LHJZ		10	-40°C ~ 125°C	10-Lead DFN
LT8609AEDDM-3.3#PBF	0	-	Tube	121	LHKB		10	-40°C ~ 125°C	10-Lead DFN
LT8609AEDDM-3.3#TRPBF	0	-	Reel	2500	LHKB		10	-40°C ~ 125°C	10-Lead DFN
LT8609AEDDM-5#PBF	355pcs	-	Tube	121	LHKC		10	-40°C ~ 125°C	10-Lead DFN
LT8609AEDDM-5#TRPBF	4578pcs	-	Reel	2500	LHKC		10	-40°C ~ 125°C	10-Lead DFN
LT8609AEMSE#PBF	5515pcs	-	Tube	50	LTGVR	1	10	-40°C ~ 125°C	10-Lead MSOP
LT8609AEMSE#TRPBF	5000pcs	-	Reel	2500	LTGVR	1	10	-40°C ~ 125°C	10-Lead MSOP
LT8609AEMSE16#PBF	263pcs	-	Tube	37	8609A		16	-40°C ~ 125°C	16-Lead MSOP
LT8609AEMSE16#TRPBF	2500pcs	-	Cut Tape (CT) & Digi-Reel®	2500	8609A		16	-40°C ~ 125°C	16-Lead MSOP
LT8609AHDDM#PBF	16pcs	-	Tube	121	LHJZ		10	-40°C ~ 150°C	10-Lead DFN
LT8609AHDDM#TRPBF	0	-	Reel	2500	LHJZ		10	-40°C ~ 150°C	10-Lead DFN
LT8609AHDDM-5#PBF	58pcs	-	Tube	121	LHKC		10	0°C ~ 70°C	10-Lead DFN
LT8609AHDDM-5#TRPBF	0	-	Reel	2500	LHKC		10	0°C ~ 70°C	10-Lead DFN
LT8609AHMSE#PBF	781pcs	-	Tube	50	LTGVR		10	-40°C ~ 150°C	10-Lead MSOP
LT8609AHMSE#TRPBF	3589pcs	-	Reel	2500	LTGVR		10	-40°C ~ 150°C	10-Lead MSOP
LT8609AHMSE16#PBF	111pcs	-	Tube	37	8609A		16	-40°C ~ 150°C	16-Lead MSOP
LT8609AHMSE16#TRPBF	0	-	Reel	2500	8609A		16	-40°C ~ 150°C	16-Lead MSOP
LT8609AIMSE#PBF	1011pcs	-	Tube	50	LTGVR		10	-40°C ~ 125°C	10-Lead MSOP
LT8609AIMSE#TRPBF	1030pcs	-	Reel	2500	LTGVR		10	-40°C ~ 125°C	10-Lead MSOP
LT8609AIMSE#WTRPBF	0	-	Reel	2500	LTGVR		10	-40°C ~ 125°C	10-Lead MSOP
LT8609AIMSE16#PBF	65pcs	-	Tube	37	8609A		16	-40°C ~ 125°C	16-Lead MSOP
LT8609AIMSE16#TRPBF	2500pcs	-	Cut Tape (CT) & Digi-Reel®	2500	8609A		16	-40°C ~ 125°C	16-Lead MSOP
LT8609AJDDM#PBF	3430pcs	-	Tube	121	LHJZ		10	-40°C ~ 150°C	10-Lead DFN
LT8609AJDDM#TRPBF	2500pcs	-	Reel	2500	LHJZ	1	10	-40°C ~ 150°C	10-Lead DFN
LT8609AJDDM-3.3#PBF	0	-	Tube	121	LHKB		10	-40°C ~ 150°C	10-Lead DFN
LT8609AJDDM-3.3#TRPBF	0	-	Reel	2500	LHKB		10	-40°C ~ 150°C	10-Lead DFN
LT8609AJDDM-5#PBF	62pcs	-	Tube	121	LHKC		10	-40°C ~ 150°C	10-Lead DFN
LT8609AJDDM-5#TRPBF	2500pcs	-	Reel	2500	LHKC		10	-40°C ~ 150°C	10-Lead DFN
LT8609AJMSE#PBF	85pcs	-	Tube	50	LTGVR		10	-40°C ~ 150°C	10-Lead MSOP
LT8609AJMSE#TRPBF	2500pcs	-	Reel	2500	LTGVR		10	-40°C ~ 150°C	10-Lead MSOP
LT8609AJMSE16#PBF	592pcs	-	Tube	37	8609A		16	-40°C ~ 150°C	16-Lead MSOP
LT8609AJMSE16#TRPBF	2500pcs	-	Reel	2500	8609A		16	-40°C ~ 150°C	16-Lead MSOP

• Wide Input Voltage Range: 3.0V to 42V
• Ultralow Quiescent Current Burst Mode^® Operation:
  • <2.5µA I_Q Regulating 12V_IN to 3.3V_OUT
  • Output Ripple <10mV_P-P
• High Efficiency 2MHz Synchronous Operation:
  • >93% Efficiency at 1A, 5V_OUT from 12V_IN
• 3A Maximum Continuous Output
• Fast Minimum Switch-On Time: 45ns
• LT8609A Available in Fixed 3.3V and 5V Output
• Adjustable and Synchronizable: 200kHz to 2.2MHz
• Spread Spectrum Frequency Modulation for Low EMI
• Allows Use of Small Inductors
• Low Dropout
• Peak Current Mode Operation
• Accurate 1V Enable Pin Threshold
• Internal Compensation
• Output Soft-Start and Tracking
• Small 10-Lead MSOP Package, 16-Lead MSOP Package, or 10-Lead 3mm × 3mm DFN Package with Side Wettable Flanks
• AEC-Q100 Qualified for Automotive Applications

• GSM Transceivers
• General Purpose Step-Down
• Low EMI Step-Down

The LT8609A is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 1.7µA of nonswitching quiescent current. The LT8609A can deliver 3A of continuous current. Burst Mode operation enables high efficiency down to very low output currents while keeping the output ripple below 10mV_P-P. A SYNC pin allows synchronization to an external clock, or spread spectrum modulation for low EMI operation. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The EN/UV pin has an accurate 1V threshold and can be used to program V_IN UVLO or to shut down the part. A capacitor on the TR/SS pin programs the output voltage ramp rate during start-up while the PG flag signals when V_OUT is within ±8.5% on the adjustable output parts or ±7.5% on the fixed output parts of the programmed output voltage as well as fault conditions. The LT8609A has slower switch edges for lower EMI emissions.