LTC3831EGN-1 Linear Technology, LTC3831EGN-1 Datasheet - Page 2

• Manufacturer Part Number: LTC3831EGN-1
• Description: IC CTRLR SW REG SYNC DDR 16SSOP
• Manufacturer: Linear Technology

Specifications of LTC3831EGN-1

• Applications: Controller, DDR
• Voltage - Input: 3 ~ 8 V
• Number Of Outputs: 1
• Voltage - Output: 0.4 ~ 4 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ABSOLUTE AXI U RATI GS
LTC3831-1
(Note 1)
Supply Voltage
Input Voltage
Junction Temperature (Note 9) ............................. 125 C
Operating Temperature Range (Note 4) .. – 40 C to 85 C
Storage Temperature Range ................. – 65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
ELECTRICAL CHARACTERISTICS
range, otherwise specifications are at T
SYMBOL
V
PV
V
V
I
I
V
V
V
A
g
I
I
2
VCC
PVCC
COMP
MAX
m
CC
UVLO
FB
V
f
SAWL
SAWH
COMPMAX
f
V
OSC
OSC
CC
OUT
V
PV
I
R
FB
CC
+
/ I
, R
CC1,2
, I
FREQSET
....................................................................... 9V
MAX
–
, FB, SHDN, FREQSET ..... – 0.3V to V
................................................................ 14V
............................................... – 0.3V to 14V
PARAMETER
Supply Voltage
PV
Undervoltage Lockout Voltage
Feedback Voltage
Output Load Regulation
Output Line Regulation
Supply Current
PV
Internal Oscillator Frequency
V
V
Maximum V
Frequency Adjustment
Error Amplifier Open-Loop DC Gain
Error Amplifier Transconductance
Error Amplifier Output Sink/Source Current
I
I
MAX
MAX
COMP
COMP
CC1
CC
Sink Current
Sink Current Tempco
Supply Current
W
, PV
at Minimum Duty Cycle
at Maximum Duty Cycle
CC2
COMP
Voltage
W W
A
= 25 C. V
U
CC
, PV
CC
CONDITIONS
(Note 7)
V
I
V
Figure 1, V
V
Figure 1, V
V
FREQSET Floating
V
V
(Note 10)
V
OUT
R
CC
SHDN
SHDN
FB
IMAX
IMAX
CC1
+ 0.3V
+ = 1.5V, V
The
= 0V, PV
= 4.75V to 5.25V
= 0A to 10A (Note 6)
, PV
= V
= V
= 0V
= 0V
CC
CC
CC2
SHDN
SHDN
denotes specifications that apply over the full operating temperature
(Notes 6, 10)
CC1
R
= 5V, V
– = 0V, V
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
= V
= V
= 7V
CC
CC
PV
PGND
SHDN
(Note 3)
R
GND
CC1
+ = 1.5V, V
COMP
TG
R
R
FB
–
+
T
JMAX
16-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
= 1.25V
= 125 C,
GN PACKAGE
TOP VIEW
R
– = GND, unless otherwise noted. (Note 2)
JA
= 130 C/ W
16
15
14
13
12
11
10
9
BG
PV
V
I
I
FREQSET
COMP
SS
FB
MAX
CC
CC2
0.738
1600
MIN
230
50
3
3
9
4
U
GN PART MARKING
2000
3300
0.75
2.85
TYP
300
100
2.4
0.1
0.7
0.1
1.2
2.2
20
10
65
12
12
5
2
1
LTC3831EGN-1
ORDER PART
NUMBER
W
38311
0.762
MAX
2400
13.2
360
2.9
1.6
10
30
10
15
20
8
ppm/ C
kHz/ A
UNITS
U
38311f
mho
kHz
mV
mA
mA
mV
dB
V
V
V
V
A
A
V
V
V
A
A
A