Datasheet

LTC3822-1
2
38221f
PACKAGE/ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage (V
IN
) ........................ –0.3V to 4.5V
BOOST Voltage .......................................... –0.3V to 10V
PLLLPF, RUN, IPRG, SYNC/MODE,
TRACK/SS Voltages .......................–0.3V to (V
IN
+ 0.3V)
V
FB
, I
TH
Voltages ....................................... –0.3V to 2.4V
SW Voltage ............................................ –2V to V
IN
+ 1V
Operating Temperature Range (Note 2) ... –40°C to 85°C
(Note 1)
TOP VIEW
13
DD PACKAGE
12-LEAD (3mm × 3mm) PLASTIC DFN
12
11
8
9
10
4
5
3
2
1
SW
V
IN
BOOST
TG
BG
IPRG
PLLLPF
SYNC/MODE
TRACK/SS
V
FB
I
TH
RUN
6
7
T
JMAX
= 125°C, θ
JA
= 43°C/W
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB
GN PACKAGE
16-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
GND
PLLLPF
SYNC/MODE
PGOOD
TRACK/SS
V
FB
I
TH
RUN
SW
SENSE
–
V
IN
BOOST
TG
BG
IPRG
GND
T
JMAX
= 125°C, θ
JA
= 110°C/W
ORDER PART NUMBER DD PART MARKING ORDER PART NUMBER GN PART MARKING
LTC3822EDD-1 LCMS LTC3822EGN-1 38221
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
IN
= 3.3V unless otherwise noted.
Storage Ambient Temperature Range
DD ..................................................... –65°C to 125°C
GN ..................................................... –65°C to 150°C
Junction Temperature (Note 3) ............................. 125°C
Lead Temperature (Soldering, 10 sec)
GN Only ............................................................ 300°C
PARAMETER CONDITIONS MIN TYP MAX UNITS
Main Control Loops
V
IN
Operating Voltage Range 2.75 3.3 4.5 V
Input DC Supply Current
Normal Operation
Sleep Mode
Shutdown
UVLO
(Note 4)
RUN = 0
V
IN
= UVLO Threshold – 200mV
360
105
7.5
10
525
150
20
20
µA
µA
µA
Undervoltage Lockout Threshold V
IN
Falling
V
IN
Rising
●
●
1.95
2.15
2.25
2.45
2.55
2.75
V
V
Shutdown Threshold Of RUN Pin 0.7 1.1 1.4 V
Regulated Feedback Voltage (Note 5)
●
0.594 0.6 0.606 V
Output Voltage Line Regulation 2.75V < V
IN
< 4.5V (Note 5) 0.025 0.1 %/V