LTC3868IUH#TRPBF Linear Technology, LTC3868IUH#TRPBF Datasheet - Page 2

• Manufacturer Part Number: LTC3868IUH#TRPBF
• Description: IC CTRLR STP-DN SYNC DUAL 32QFN
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3868IUH#TRPBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.8 ~ 14 V
• Frequency - Switching: 50kHz ~ 900kHz
• Voltage - Input: 4 ~ 24 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -

ABSOLUTE MAXIMUM RATINGS
LTC3868
(Note 1)
Input Supply Voltage (V
Topside Driver Voltages
Switch Voltage (SW1, SW2) ........................ –5V to 28V
PLLIN/MODE
(BOOST1-SW1), (BOOST2-SW2) ................ –0.3V to 6V
RUN1, RUN2 ................................................ –0.3V to 8V
SENSE1
SENSE2
FREQ Voltages ..................................... –0.3V to INTV
I
EXTV
I
PGOOD1, PGOOD2 Voltages ....................... –0.3V to 6V
SS1, SS2, INTV
Operating Temperature Range (Note 2) ... –40°C to 85°C
Junction Temperature (Note 3) ............................. 125°C
Storage Temperature Range ................... –65°C to 150°C
ORDER INFORMATION
LEAD FREE FINISH
LTC3868EUH#PBF
LTC3868IUH#PBF
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping
container.Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to:
For more information on tape and reel specifi cations, go to:
ELECTRICAL CHARACTERISTICS
SYMBOL
V
V
I
V
2
temperature range, otherwise specifi cations are at T
FB1,2
LIM
TH1
IN
FB1,2
REFLNREG
BOOST1, BOOST2 ................................. –0.3V to 34V
Maximum Current Sourced into Pin from
Source >8V ......................................................100μA
, PHASMD Voltages ....................... –0.3V to INTV
, I
CC
TH2
+
–
...................................................... –0.3V to 14V
, SENSE2
,V
Voltages ...................................... –0.3V to 16V
FB1
PARAMETER
Input Supply Operating Voltage Range
Regulated Feedback Voltage
Feedback Current
Reference Voltage Line Regulation
, V
CC
FB2
Voltages ......................... –0.3V to 6V
+
, SENSE1
Voltages ...................... –0.3V to 6V
TAPE AND REEL
LTC3868EUH#TRPBF
LTC3868IUH#TRPBF
IN
) ......................... –0.3V to 28V
–
http://www.linear.com/leadfree/
PART MARKING*
3868
3868
CONDITIONS
(Note 4) I
(Note 4)
(Note 4) V
A
http://www.linear.com/tapeandreel/
= 25°C. V
The
TH1,2
IN
CC
CC
= 4.5V to 24V
l
IN
Voltage = 1.2V
denotes the specifi cations which apply over the full operating
= 12V, V
PIN CONFIGURATION
PACKAGE DESCRIPTION
32-Lead (5mm × 5mm) Plastic QFN
32-Lead (5mm × 5mm) Plastic QFN
RUN1,2
PLLIN/MODE
SENSE1
PHASMD
EXPOSED PAD (PIN 33) IS SGND, MUST BE SOLDERED TO PCB
CLKOUT
= 5V, EXTV
SGND
RUN1
RUN2
FREQ
–
1
2
3
4
5
6
7
8
32-LEAD (5mm 5mm) PLASTIC QFN
32 31 30 29 28 27 26 25
9 10 11 12 13 14 15 16
CC
T
JMAX
= 0V unless otherwise noted.
= 125°C, θ
l
UH PACKAGE
TOP VIEW
SGND
33
0.788
MIN
JA
4
= 34°C/W
0.002
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
TYP
0.8
±5
24
23
22
21
20
19
18
17
BOOST1
BG1
V
PGND
EXTV
INTV
BG2
BOOST2
IN
0.812
MAX
0.02
±50
24
CC
CC
UNITS
3868fd
%/V
nA
V
V