LTC3826-1 Datasheet, PDF (2/32 Pages) Linear Technology – 30μA IQ, Dual, 2-Phase Synchronous Step-Down Controller

LTC3826-1
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Supply Voltage (V_IN) ......................... 36V to –0.3V
Topside Driver Voltages
BOOST1, BOOST2.................................. 42V to –0.3V
Switch Voltage (SW1, SW2) ......................... 36V to –5V
(BOOST1-SW1), (BOOST2-SW2) ............. 8.5V to –0.3V
RUN1, RUN2 ............................................... 7V to –0.3V
SENSE1⁺, SENSE2⁺, SENSE1^–,
SENSE2^– Voltages ..................................... 11V to –0.3V
PLLIN/MODE, PLLLPF, TRACK/SS1, TRACK/SS2
Voltages ........................................... INTV_CC to –0.3V
EXTV_CC ...................................................... 10V to –0.3V
I_TH1, I_TH2, V_FB1, V_FB2 Voltages ................. 2.7V to –0.3V
PGOOD1 Voltage....................................... 8.5V to –0.3V
Peak Output Current <10μs (TG1, TG2, BG1, BG2).....3A
Operating Temperature Range (Note 2).... –40°C to 85°C
Junction Temperature (Note 3) ............................. 125°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
PIN CONFIGURATION
TOP VIEW
I_TH1 1
V_FB1 2
SENSE1⁺ 3
SENSE1^– 4
PLLLPF 5
PLLIN/MODE 6
SGND 7
RUN1 8
RUN2 9
SENSE2^– 10
SENSE2⁺ 11
V_FB2 12
I_TH2 13
TRACK/SS2 14
28 TRACK/SS1
27 PGOOD1
26 TG1
25 SW1
24 BOOST1
23 BG1
22 V_IN
21 PGND
20 EXTV_CC
19 INTV_CC
18 BG2
17 BOOST2
16 SW2
15 TG2
G PACKAGE 28-LEAD PLASTIC SSOP
T_JMAX = 125°C, Q_JA = 95°C/W
ORDER INFORMATION
LEAD FREE FINISH
LTC3826EG-1#PBF
TAPE AND REEL
LTC3826EG-1#TRPBF
PART MARKING
LTC3826EG-1
PACKAGE DESCRIPTION
28-Lead Plastic SSOP
LTC3826IG-1#PBF
LTC3826IG-1#TRPBF LTC3826IG-1
28-Lead Plastic SSOP
LEAD BASED FINISH
LTC3826EG-1
TAPE AND REEL
LTC3826EG-1#TR
PART MARKING
LTC3826EG-1
PACKAGE DESCRIPTION
28-Lead Plastic SSOP
LTC3826IG-1
LTC3826IG-1#TR
LTC3826IG-1
28-Lead Plastic SSOP
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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
–40°C to 85°C
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_IN = 12V, V_{RUN/SS1, 2} = 5V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Main Control Loops
V_{FB1, 2}
I_{VFB1, 2}
V_REFLNREG
Regulated Feedback Voltage
Feedback Current
Reference Voltage Line Regulation
(Note 4) I_{TH1, 2} Voltage = 1.2V
(Note 4)
V_IN = 4V to 30V (Note 4)
l 0.792 0.800 0.808
V
–5
–50
nA
0.002 0.02
%/V
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