LTC3850-2_15 Datasheet, PDF (2/36 Pages) Linear Technology – Dual, 2-Phase Synchronous Step-Down Switching Controller

LTC3850-2
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Supply Voltage (V_IN) ......................... 30V to –0.3V
Input Supply Transient Voltage (V_IN) < 500ms, with
INTV_CC ≥ 5V........................................... 34V to –0.3V
Top Side Driver Voltages
BOOST1, BOOST2.................................. 34V to –0.3V
Switch Voltage (SW1, SW2) ......................... 30V to –5V
INTV_CC, RUN1, RUN2, PGOOD, EXTV_CC,
(BOOST1-SW1), (BOOST2-SW2)................. 6V to –0.3V
SENSE1⁺, SENSE2⁺, SENSE1^–,
SENSE2^– Voltages..................................... 5.5V to –0.3V
MODE/PLLIN, TK/SS1,TK/SS2, FREQ/PLLFLTR
Voltages ................................................ INTV_CC to –0.3V
I_TH1, I_TH2, V_FB1, V_FB2 Voltages .................. 2.7V to –0.3V
INTV_CC Peak Output Current ................................100mA
Operating Temperature Range (Note 2)....–40°C to 85°C
Junction Temperature (Note 3) ............................. 125°C
Storage Temperature Range...................–65°C to 125°C
Lead Temperature (Soldering, 10 sec)
(GN Package).................................................... 300°C
PIN CONFIGURATION
TOP VIEW
RUN1 1
SENSE1⁺ 2
SENSE1^– 3
V_FB1 4
TK/SS1 5
I_TH1 6
SGND 7
I_TH2 8
TK/SS2 9
V_FB2 10
SENSE2^– 11
SENSE2⁺ 12
RUN2 13
EXTV_CC 14
28 FREQ/PLLFLTR
27 MODE/PLLIN
26 SW1
25 TG1
24 BOOST1
23 BG1
22 V_IN
21 INTV_CC
20 BG2
19 PGND
18 BOOST2
17 TG2
16 SW2
15 PGOOD
GN PACKAGE
28-LEAD NARROW PLASTIC SSOP
T_JMAX = 125°C, θ_JA = 95°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3850IGN-2#PBF
LTC3850IGN-2#TRPBF LTC3850GN-2
28-Lead Narrow Plastic SSOP
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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/
TEMPERATURE RANGE
–40°C to 85°C
38502f
2