Datasheet
LTC3838-1
2
38381f
For more information www.linear.com/3838-1
ABSOLUTE MAXIMUM RATINGS
V
IN
Voltage ................................................. –0.3V to 40V
BOOST1, BOOST2 Voltages
....................... –0.3V to 46V
SW1, SW2 Voltages
...................................... –5V to 40V
INTV
CC
, DRV
CC1
, DRV
CC2
, EXTV
CC
, PGOOD1,
PGOOD2, RUN1, RUN2, (BOOST1-SW1),
(BOOST2-SW2), MODE/PLLIN Voltages
...... –0.3V to 6V
SENSE1
+
, SENSE2
+
,SENSE1
–
, SENSE2
–
Voltages
....................................................... –0.6V to 6V
V
OUTSENSE1
+
Voltage ............... –0.6V to (INTV
CC
+ 0.3V)
V
OUTSENSE1
–
Voltage .....................–0.6V to V
OUTSENSE1
+
TRACK/SS1, TRACK/SS2 Voltages .............. –0.3V to 5V
DTR1, DTR2, PHASMD, RT, V
RNG
, V
DFB2
+
, V
DFB2
–
,
ITH1, ITH2 Voltages
................ –0.3V to (INTV
CC
+ 0.3V)
Operating Junction Temperature Range
(Notes 2, 3, 4)
........................................ –40°C to 125°C
Storage Temperature Range
.................. –65°C to 150°C
(Note 1)
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3838EUHF-1#PBF LTC3838EUHF-1#TRPBF 38381 38-Lead (5mm × 7mm) Plastic QFN –40°C to 125°C
LTC3838IUHF-1#PBF LTC3838IUHF-1#TRPBF 38381 38-Lead (5mm × 7mm) Plastic QFN –40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping
container. Consult LTC Marketing for information
on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
13 14 15 16
TOP VIEW
39
PGND
UHF PACKAGE
38-LEAD (5mm × 7mm) PLASTIC QFN
17 18 19
38 37 36 35 34 33 32
24
25
26
27
28
29
30
31
8
7
6
5
4
3
2
1V
DFB2
+
V
RNG
ITH2
TRACK/SS2
MODE/PLLIN
CLKOUT
SGND
RT
PHASMD
ITH1
TRACK/SS1
V
OUTSENSE1
+
TG2
SW2
BG2
DRV
CC2
EXTV
CC
INTV
CC
PGND
V
IN
DRV
CC1
BG1
SW1
TG1
V
DFB2
–
SENSE2
+
SENSE2
–
DTR2
RUN2
PGOOD2
BOOST2
V
OUTSENSE1
–
SENSE1
+
SENSE1
–
DTR1
RUN1
PGOOD1
BOOST1
23
22
21
20
9
10
11
12
T
JMAX
= 125°C, θ
JA
= 34°C/W
EXPOSED PAD (PIN 39) IS PGND, MUST BE SOLDERED TO PCB
PIN CONFIGURATION
Table 1. Comparison of LTC3838 Options
PART NUMBER DESCRIPTION
LTC3838 ±0.67% Differential Output Regulation on Channel 1
±1% Output Regulation on Channel 2
Separate-Per-Channel Continuous 30mV to 100mV Current Sense Range Controls
LTC3838-1 ±0.67% and ±0.75%, Both Differential Output Regulation on Channel 1 and 2
Single-Pin 30mV/60mV Current Sense Range Control
LTC3838-2 ±0.67% Differential Output Regulation with Internal Reference on Channel 1
±4mV Differential Output Regulation with External Reference Voltage on
Channel 2
Fixed 30mV Current Sense Range