Datasheet

LT8609/LT8609A/LT8609B
25
Rev. H
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REVISION HISTORY
REV DATE DESCRIPTION PAGE NUMBER
A 01/16 Added the LT8609A Version to Header
Added the LT8609A Version to Description
Clarified Description
Clarified Electrical Specifications
Clarified Load Regulation, Line Regulation, No-Load Supply Current vs Temperature, Minimum On-Time vs
Temperature Graphs, Frequency Foldback and Soft-Start vs Temperature Graphs
Clarified Block Diagram with Optional Input Resistors
Replaced Figure 1 with Table 1 in text
Clarified C
IN
Capacitor in Text and PCB Layout
Clarified Typical Application
All
1
1
3
5, 6, 7, 8
10
12
18
24
B 06/16 Clarified Switch Drop vs Switch Current Graph axis units
Clarified Switching Waveforms conditions
6
8
C 10/16 Added LT8609B Option
Added LT8609B Option to Absolute Maximum Ratings, Added LT8609B Package Drawing and Ordering Information
Clarified Electrical Parameters and Notes for LT8609B Option
Clarified Top FET Current Limit vs Temperature Graph
Clarified Pin Functions to Include LT8609B
Clarified Operation Section to Include LT8609B
Clarified Applications Information Section to Include LT8609B
Clarified Graphs in Figure 5 and 6
Clarified Typical Applications Schematics
All
2
3
6
10
12
13 – 20
20
21, 22, 23, 24
D 01/17 Clarified Graphs
Clarified Schematics
6, 7, 20
23, 26
E 06/17 Add H-grade to the A version
Modified application circuits
2, 4
21, 22, 23
F 11/17 Clarified Oscillator Frequency R
T
Conditions
Clarified Minimum Off Time
Clarified Efficiency Graph
Clarified Frequency Foldback Graph
Clarified Block Diagram
Clarified Maximum Duty Cycle
Clarified Figure 4
3
3
5
8
11
14
19
G 01/18 Added MSOP-16E Package option
Clarified the Pin Functions
1, 2, 24
10
H 02/19 Changed 2A/3A to 3A
Replaced all graphs with I
OUT
to 3A
Added LT8609AJMSE16 and LT8609AJMSE options
Eliminated “The internal circuitry…” paragraph
Clarified Figure 4 PCB Layout
Clarified Figure 5
Eliminated “The LT8609/LT8609A/LT8609B’s…” paragraph
Updated Typical Applications
1
1, 5, 6, 7, 8
2
15
19
20
20
21, 22
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