Datasheet Linear Technology LT1938 — 数据表

制造商	Linear Technology
系列	LT1938

25V，2.2A，2.8MHz降压开关稳压器

数据表

PDF, 271 Kb, 语言: en, 文件上传: Sep 3, 2017, 页数: 24
25V, 2.2A, 2.8MHz Step-Down Switching Regulator

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	LT1938EDD#PBF	LT1938EDD#TRPBF	LT1938IDD#PBF	LT1938IDD#TRPBF
N	1	2	3	4
Package	3x3 DFN-10 包装外形图	3x3 DFN-10 包装外形图	3x3 DFN-10 包装外形图	3x3 DFN-10 包装外形图
Package Code	DD	DD	DD	DD
Package Index	05-08-1699	05-08-1699	05-08-1699	05-08-1699
Pin Count	10	10	10	10

Parameters / Models	LT1938EDD#PBF	LT1938EDD#TRPBF	LT1938IDD#PBF	LT1938IDD#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC1273A	DC1273A	DC1273A	DC1273A
Design Tools	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model
Export Control	no	no	no	no
Features	Integrated Boost Diode, Power Good, Resistor Set Frequency	Integrated Boost Diode, Power Good, Resistor Set Frequency	Integrated Boost Diode, Power Good, Resistor Set Frequency	Integrated Boost Diode, Power Good, Resistor Set Frequency
Frequency, kHz	2800	2800	2800	2800
Frequency Adjust Range	300kHz - 2.8MHz	300kHz - 2.8MHz	300kHz - 2.8MHz	300kHz - 2.8MHz
Integrated Inductor	no	no	no	no
Ishutdown, µA	0.1	0.1	0.1	0.1
Isupply, mA	0.4	0.4	0.4	0.4
Max Phases	1	1	1	1
Monolithic	yes	yes	yes	yes
Number of Outputs	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	-40 to 85	-40 to 85
Output Current, A	2.2	2.2	2.2	2.2
Polyphase	no	no	no	no
Switch Current, A	3.6	3.6	3.6	3.6
Synchronous	no	no	no	no
Topology	Buck	Buck	Buck	Buck
Vin Max, V	25	25	25	25
Vin Min, V	3.6	3.6	3.6	3.6
Vout Max, V	23.875	23.875	23.875	23.875
Vout Maximum	.95Vin	.95Vin	.95Vin	.95Vin
Vout Min, V	1.265	1.265	1.265	1.265

	LT1938EDD#PBF	LT1938EDD#TRPBF	LT1938IDD#PBF	LT1938IDD#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant

系列: LT1938 (4)

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Internal Power Switch Buck