LTC3831_15 Datasheet, PDF (2/20 Pages) Linear Technology – High Power Synchronous Switching Regulator Controller for DDR Memory Termination

LTC3831
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage
V_CC ..............................................................................9V
PV_CC1,2......................................................................14V
Input Voltage
I_FB, I_MAX ..................................................... –0.3V to 14V
R⁺, R^–, FB, SHDN, FREQSET .......... –0.3V to V_CC to 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
PIN CONFIGURATION
TG 1
PV_CC1 2
PGND 3
GND 4
R^– 5
FB 6
R⁺ 7
SHDN 8
TOP VIEW
16 BG
15 PV_CC2
14 V_CC
13 I_FB
12 I_MAX
11 FREQSET
10 COMP
9 SS
GN PACKAGE
16-LEAD PLASTIC SSOP
T_JMAX = 125°C, θ_JA = 130°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3831EGN#PBF
LTC3831EGN#TRPBF 3831
16-Lead Plastic SSOP
LTC3831IGN#PBF
LTC3831IGN#TRPBF
3831
16-Lead Plastic SSOP
LEAD BASED FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3831EGN
LTC3831EGN#TR
3831
16-Lead Plastic SSOP
LTC3831IGN
LTC3831IGN#TR
3831
16-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 ● denotes specifications that apply over the full operating temperature
range, otherwise specifications are at T_A = 25°C. V_CC, PV_CC1, PV_CC2 = 5V, V_R+ = 2.5V, V_R– = GND, unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
V_CC
PV_CC
V_UVLO
V_FB
ΔV_OUT
I_VCC
I_PVCC
Δf_OSC
V_SAWL
V_SAWH
Supply Voltage
PV_CC1, PV_CC2, Voltage
Undervoltage Lockout Voltage
Feedback Voltage
Output Load Regulation
Output Line Regulation
Supply Current
PV_CC Supply Current
Internal Oscillator Frequency
V_COMP at Minimum Duty Cycle
V_COMP at Maximum Duty Cycle
(Note 7)
V_R+ = 2.5V, V_R– = 0V, V_COMP = 1.25V
I_OUT = 0A to 10A (Note 6)
V_CC = 4.75V to 5.25V
Figure 2, V_SHDN = V_CC
V_SHDN = 0V
Figure 2, V_SHDN = V_CC (Note 3)
V_SHDN = 0V
FREQSET Floating
l
3
5
8
V
l
3
13.2
V
2.4
2.9
V
l 1.231 1.25 1.269
V
2
mV
0.1
mV
l
0.7
1.6
mA
l
1
10
μA
l
14
20
mA
l
0.1
10
μA
l 160
200
240
kHz
1.2
V
2.2
V
3831fb
2