LTC3836_15 Datasheet, PDF (2/30 Pages) Linear Technology – Dual 2-Phase, No RSENSETM Low VIN Synchronous Controller

LTC3836
ABSOLUTE MAXIMUM RATINGS (Note 1)
BOOST1, BOOST2 Voltages ....................... –0.3V to 10V
Input Supply Voltage (V_IN) ........................ –0.3V to 4.5V
PLLLPF, RUN/SS, SYNC/FCB,
SENSE1⁺, SENSE2⁺,
IPRG1, IPRG2 Voltages..................–0.3V to (V_IN + 0.3V)
V_FB1, V_FB2, I_TH1, I_TH2,
TRACK/SS2 Voltages ................................ –0.3V to 2.4V
SW1, SW2 Voltages............................... –2V to V_IN + 1V
PGOOD....................................................... –0.3V to 10V
Operating Temperature Range (Note 2).... –40°C to 85°C
Storage Temperature Range................... –65°C to 125°C
Junction Temperature (Note 3) ............................. 125°C
PIN CONFIGURATION
SW1 1
N/C 2
IPRG1 3
V_FB1 4
I_TH1 5
IPRG2 6
PLLLPF 7
SGND 8
V_IN 9
TRACK/SS2 10
V_FB2 11
I_TH2 12
PGOOD 13
SW2 14
TOP VIEW
28 SENSE1⁺
27 BOOST1
26 PGND
25 BG1
24 SYNC/FCB
23 TG1
22 PGND
21 TG2
20 RUN/SS
19 BG2
18 N/C
17 PGND
16 BOOST2
15 ^SENSE2+
GN PACKAGE
28-LEAD PLASTIC SSOP
T_JMAX = 125°C, θ_JA = 90°C/W
TOP VIEW
28 27 26 25 24 23
VFB1 1
22 BG1
ITH1 2
21 SYNC/FCB
IPRG2 3
20 TG1
PLLLPF 4
SGND 5
29
19 PGND
18 TG2
V_IN 6
TRACK/SS2 7
17 RUN/SS
16 N/C
VFB2 8
15 BG2
9 10 11 12 13 14
UFD PACKAGE
28-LEAD (4mm × 5mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 43°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3836EGN#PBF
LTC3836EGN#TRPBF
LTC3836EGN
28-Lead Plastic SSOP
LTC3836EUFD#PBF
LTC3836EUFD#TRPBF 3836
28-Lead (4mm × 5mm) Plastic QFN
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
–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 = 3.3V unless otherwise specified.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Main Control Loops
Input DC Supply Current
Normal Mode
Shutdown
UVLO
(Note 4)
RUN/SS = V_IN
RUN/SS = 0V
V_IN = UVLO Threshold –200mV
450
700
μA
6.5
15
μA
4
10
μA
3836fb
2