Datasheet Linear Technology LT8645S

Manufacturer	Linear Technology
Series	LT8645S

65V, 8A Synchronous Step-Down Silent Switcher 2 with 2.5µA Quiescent Current

Datasheets

PDF, 457 Kb, Language: en, File uploaded: Mar 27, 2018, Pages: 30
65V, 8A Synchronous Step-Down Silent Switcher 2 with 2.5μA Quiescent Current

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	LT8645SEV#PBF	LT8645SIV#PBF
N	1	2
Package	6mm × 4mm × 0.94mm LQFN Package Outline Drawing	6mm × 4mm × 0.94mm LQFN Package Outline Drawing
Package Code	LQFN	LQFN
Package Index	05-08-1512	05-08-1512
Pin Count	32	32

Parameters / Models	LT8645SEV#PBF	LT8645SIV#PBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC2468A	DC2468A
Design Tools	LTspice Model	LTspice Model
Export Control	no	no
Features	Low EMI, Silent Switcher 2 Architecture, Internal Bypass Caps, Resistor Set Frequency, External Synchronization, Burst Mode, Tracking, Power Good	Low EMI, Silent Switcher 2 Architecture, Internal Bypass Caps, Resistor Set Frequency, External Synchronization, Burst Mode, Tracking, Power Good
Frequency, kHz	2200	2200
Frequency Adjust Range	200kHz to 2.2MHz	200kHz to 2.2MHz
Frequency Sync Range	200kHz to 2.2MHz	200kHz to 2.2MHz
Integrated Inductor	no	no
Ishutdown, µA	0.75	0.75
Isupply, mA	0.0017	0.0017
Max Phases	1	1
Monolithic	yes	yes
Number of Outputs	1	1
Operating Temperature Range, °C	0 to 85	-40 to 85
Output Current, A	8	8
Polyphase	no	no
Switch Current, A	14	14
Synchronous	yes	yes
Topology	Buck	Buck
Topology 1	Buck	Buck
Vin Max, V	65	65
Vin Min, V	3.4	3.4
Vin Min Startup, V	3.4	3.4
Vout Max, V	64.35	64.35
Vout Maximum	0.99Vin	0.99Vin
Vout Min, V	0.97	0.97
Vref Accuracy Over Temp, %	0.6	0.6

	LT8645SEV#PBF	LT8645SIV#PBF
RoHS	Compliant	Compliant

Series: LT8645S (2)

Power Management > Switching Regulator > Ultralow Noise Regulators
Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | Internal Power Switch Buck | High Input Voltage Buck