LTC3831EGN#PBF Linear Technology, LTC3831EGN#PBF Datasheet - Page 3

• Manufacturer Part Number: LTC3831EGN#PBF
• Description: IC SW REG CONTROLLR SYNC 16-SSOP
• Manufacturer: Linear Technology

Specifications of LTC3831EGN#PBF

• Applications: Controller, DDR
• Voltage - Input: 3 ~ 8 V
• Number Of Outputs: 1
• Voltage - Output: 1.27 ~ 4 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP
• Primary Input Voltage: 8V
• No. Of Outputs: 1
• Output Current: 10A
• No. Of Pins: 16
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 1 - Unlimited
• Supply Voltage Range: 3V To 8V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS
range, otherwise specifi cations are at T
SYMBOL
V
Δf
A
g
I
I
V
V
I
I
I
R
t
t
DC
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground unless otherwise
specifi ed.
Note 3: Supply current in normal operation is dominated by the current
needed to charge and discharge the external FET gates. This will vary with
the LTC3831 operating frequency, operating voltage and the external FETs
used.
Note 4: The LTC3831EGN is guaranteed to meet performance
specifi cations from 0°C to 85°C. Specifi cations over the –40°C to 85°C
operating temperature range are assured by design, characterization
and correlation with statistical process controls. The LTC 3831IGN is
guaranteed to meet performance specifi cations over the full –40°C to 85°C
temperature range.
COMP
MAX
IN
SS
SSIL
r,
NOV
V
m
COMPMAX
IH
IL
+
t
OSC
f
MAX
/ΔI
FREQSET
PARAMETER
Maximum V
Frequency Adjustment
Error Amplifi er Open-Loop DC Gain
Error Amplifi er Transconductance
Error Amplifi er Output Sink/Source
Current
I
I
SHDN Input High Voltage
SHDN Input Low Voltage
SHDN Input Current
Soft-Start Current
Maximum Soft-Start Sink Current
Undercurrent Limit
R
Driver Rise/Fall Time
Driver Nonoverlap Time
Maximum TG Duty Cycle
MAX
MAX
+
Input Resistance
Sink Current
Sink Current Tempco
COMP
A
= 25°C. V
CC
, PV
CONDITIONS
V
V
V
V
V
V
PV
Figure 2, PV
Figure 2, PV
Figure 2, V
CC1
FB
IMAX
IMAX
SHDN
SS
IMAX
CC1
The
= 0V, PV
= 0V, V
, PV
= V
= V
= V
= 8V
= V
●
CC2
CC
CC
CC
CC
FB
IMAX
denotes specifi cations that apply over the full operating temperature
, V
CC1
CC1
CC1
(Note 6)
= 0V (Note 5), PV
= 5V, V
IFB
= PV
= PV
Note 5: Rise and fall times are measured using 10% and 90% levels. Duty
cycle and nonoverlap times are measured using 50% levels.
Note 6: Guaranteed by design, not subject to test.
Note 7: PV
at 95% maximum duty cycle and for the current limit protection circuit to
be active.
Note 8: The current limiting amplifi er can sink but cannot source current.
Under normal (not current limited) operation, the output current will be
zero.
Note 9: This IC includes overtemperature protection that is intended to protect
the device during momentary overload conditions. Junction temperature
will exceed 125°C when overtemperature protection is active. Continuous
operation above the specifi ed maximum operating junction temperature may
impair device reliability.
= 8V
= 0V, V
= 0V, V
CC2
CC2
R
IFB
+ = 2.5V, V
= 5V (Note 5)
= 5V (Note 5)
SS
= V
CC1
= V
CC
must be higher than V
CC
CC1
(Note 8),
= 8V
R
– = GND, unless otherwise noted. (Note 2)
●
●
●
●
●
●
●
●
●
●
MIN
520
CC
2.4
46
–8
25
91
9
4
by at least 2.5V for TG to operate
3300
2.85
49.5
TYP
650
100
–12
120
0.1
1.6
10
55
12
12
80
95
LTC3831
MAX
780
–16
250
250
0.8
15
20
1
ppm/°C
kHz/μA
UNITS
μmho
3831fb
3
mA
kΩ
dB
μA
μA
μA
μA
μA
ns
ns
%
V
V
V