LTC3707 Datasheet, PDF (2/32 Pages) Linear Technology – High Effi ciency, 2-Phase Synchronous Step-Down Switching Regulator

LTC3707
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Supply Voltage (V_IN) .........................30V to – 0.3V
Top Side Driver Voltages
(BOOST1, BOOST2) ................................... 36V to –0.3V
Switch Voltage (SW1, SW2) ......................... 30V to –5V
INTV_CC, EXTV_CC, RUN/SS1, RUN/SS2, (BOOST1-SW1),
(BOOST2-SW2), PGOOD.............................. 7V to –0.3V
SENSE1⁺, SENSE2⁺, SENSE1^–,
SENSE2^– Voltages .........................(1.1)INTV_CC to –0.3V
FREQSET, STBYMD, FCB Voltage ......... INTV_CC to –0.3V
I_TH1, I_TH2, V_OSENSE1, V_OSENSE2 Voltages ... 2.7V to –0.3V
Peak Output Current <10μs (TG1, TG2, BG1, BG2).....3A
INTV_CC Peak Output Current ................................. 40mA
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
RUN/SS1 1
SENSE1⁺ 2
SENSE1^– 3
V_OSENSE1 4
FREQSET 5
STBYMD 6
FCB 7
I_TH1 8
SGND 9
3.3V_OUT 10
I_TH2 11
V_OSENSE2 12
SENSE2^– 13
SENSE2⁺ 14
TOP VIEW
28 PGOOD
27 TG1
26 SW1
25 BOOST1
24 V_IN
23 BG1
22 EXTV_CC
21 INTV_CC
20 PGND
19 BG2
18 BOOST2
17 SW2
16 TG2
15 RUN/SS2
GN PACKAGE
28-LEAD PLASTIC SSOP
T_JMAX = 125°C, θ_JA = 95°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3707EGN#PBF
LTC3707EGN#TRPBF 3707EGN
28-Lead Plastic SSOP
LTC3707IGN#PBF
LTC3707IGN#TRPBF
3707IGN
28-Lead Plastic SSOP
LEAD BASED FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3707EGN
LTC3707EGN#TR
3707EGN
28-Lead Plastic SSOP
LTC3707IGN
LTC3707IGN#TR
3707IGN
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 = 15V, V_{RUN/SS1, 2} = 5V unless otherwise noted.
SYMBOL
V_{OSENSE1, 2}
I_{OSENSE1, 2}
V_REFLNREG
V_LOADREG
PARAMETER
Regulated Feedback Voltage
Feedback Current
Reference Voltage Line Regulation
Output Voltage Load Regulation
g_m1,2
Transconductance Amplifier g_m
CONDITIONS
(Note 4); I_{TH1, 2} Voltage = 1.2V
l
(Note 4)
V_IN = 3.6V to 30V (Note 4)
(Note 4)
Measured in Servo Loop; ΔI_TH Voltage = 1.2V to 0.7V l
Measured in Servo Loop; ΔI_TH Voltage = 1.2V to 2.0V l
I_{TH1, 2} = 1.2V; Sink/Source 5μA; (Note 4)
MIN
0.788
TYP
0.800
–5
0.002
MAX UNITS
0.812 V
–50 nA
0.02 %/V
0.1 0.5
%
–0.1 –0.5 %
1.3
mmho
3707fb
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