lt3684emse-trpbf Linear Technology Corporation, lt3684emse-trpbf Datasheet - Page 3

• Manufacturer Part Number: lt3684emse-trpbf
• Description: 36v, 2a, 2.8mhz Step-down Switching Regulator
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
noted. (Note 2)
PARAMETER
Minimum Bias Voltage
Feedback Voltage
FB Pin Bias Current (Note 3)
FB Voltage Line Regulation
Error Amp g
Error Amp Gain
V
V
V
V
Switching Frequency
Minimum Switch Off-Time
Switch Current Limit
Switch V
Boost Schottky Reverse Leakage
Minimum Boost Voltage (Note 4)
BOOST Pin Current
RUN/SS Pin Current
RUN/SS Input Voltage High
RUN/SS Input Voltage Low
PG Threshold Offset from Feedback Voltage
PG Hysteresis
PG Leakage
PG Sink Current
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: The LT3684E 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 LT3684I specifi cations are
guaranteed over the –40°C to 125°C temperature range.
C
C
C
C
Source Current
Sink Current
Pin to Switch Current Gain
Clamp Voltage
CESAT
m
CONDITIONS
4V < V
R
R
R
Duty Cycle = 5%
I
V
I
V
V
V
V
SW
SW
SW
RUN/SS
FB
PG
PG
T
T
T
= 8.66k
= 29.4k
= 187k
= 2A
= 1A
Rising
A
= 5V
= 0.4V
= 10V, V
= 25°C. V
IN
= 2.5V
< 34V
The
BIAS
●
IN
= 0V
denotes the specifi cations which apply over the full operating
= 10V, V
Note 3: Bias current measured in regulation. Bias current fl ows into the FB
pin.
Note 4: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the switch.
RUNS/SS
= 10V V
BOOST
= 15V, V
●
●
●
●
●
1.25
1.24
1.25
MIN
250
100
2.7
3.1
2.5
BIAS
= 3.3V unless otherwise
1.265
1.265
0.002
1000
0.02
TYP
330
100
300
100
360
100
300
2.7
3.5
3.0
1.4
3.6
1.6
0.1
30
75
18
10
2
5
LT3684
MAX
1.28
1.29
0.02
1.55
100
350
150
3.3
4.0
2.1
0.2
30
10
3
2
1
UNITS
µMho
3
3684f
MHz
MHz
%/V
kHz
A/V
mV
mA
mV
mV
nA
µA
µA
nS
µA
µA
µA
µA
V
V
V
V
A
V
V
V