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LTC3831 Datasheet(PDF) 2 Page - Linear Technology

Part # LTC3831
Description  High Power Synchronous Switching Regulator Controller for DDR Memory Termination
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3831 Datasheet(HTML) 2 Page - Linear Technology

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LTC3831
3831f
(Note 1)
Supply Voltage
VCC ....................................................................... 9V
PVCC1,2 ................................................................ 14V
Input Voltage
IFB, IMAX ............................................... – 0.3V to 14V
R+, R–, FB, SHDN, FREQSET ..... – 0.3V to VCC + 0.3V
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
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
ORDER PART
NUMBER
LTC3831EGN
TJMAX = 125°C, θJA = 130°C/ W
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCC
Supply Voltage
q
358
V
PVCC
PVCC1, PVCC2 Voltage
(Note 7)
q
3
13.2
V
VUVLO
Undervoltage Lockout Voltage
2.4
2.9
V
VFB
Feedback Voltage
VR+ = 2.5V, VR– = 0V, VCOMP = 1.25V
q
1.231
1.25
1.269
V
∆VOUT
Output Load Regulation
IOUT = 0A to 10A (Note 6)
2
mV
Output Line Regulation
VCC = 4.75V to 5.25V
0.1
mV
IVCC
Supply Current
Figure 2, VSHDN = VCC
q
0.7
1.6
mA
VSHDN = 0V
q
110
µA
IPVCC
PVCC Supply Current
Figure 2, VSHDN = VCC (Note 3)
q
14
20
mA
VSHDN = 0V
q
0.1
10
µA
∆fOSC
Internal Oscillator Frequency
FREQSET Floating
q
160
200
240
kHz
VSAWL
VCOMP at Minimum Duty Cycle
1.2
V
VSAWH
VCOMP at Maximum Duty Cycle
2.2
V
VCOMPMAX
Maximum VCOMP
VFB = 0V, PVCC1 = 8V
2.85
V
∆fOSC/∆IFREQSET Frequency Adjustment
10
kHz/
µA
AV
Error Amplifier Open-Loop DC Gain
q
46
55
dB
gm
Error Amplifier Transconductance
q
520
650
780
µmho
ICOMP
Error Amplifier Output Sink/Source Current
100
µA
IMAX
IMAX Sink Current
VIMAX = VCC
912
15
µA
q
412
20
µA
IMAX Sink Current Tempco
VIMAX = VCC (Note 6)
3300
ppm/
°C
The q denotes specifications that apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. VCC, PVCC1, PVCC2 = 5V, VR+ = 2.5V, VR– = GND, unless otherwise noted. (Note 2)
ELECTRICAL CHARACTERISTICS
GN PACKAGE
16-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
TG
PVCC1
PGND
GND
R–
FB
R+
SHDN
BG
PVCC2
VCC
IFB
IMAX
FREQSET
COMP
SS
Consult LTC Marketing for parts specified with wider operating temperature ranges.
GN PART MARKING
3831



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