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LT3710 Datasheet(PDF) 3 Page - Linear Technology

Part # LT3710
Description  Secondary Side Synchronous Post Regulator
PDF  12 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3710 Datasheet(HTML) 3 Page - Linear Technology

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LT3710
3
3710f
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT3710E is guaranteed to meet performance specifications
from 0
°C to 125°C. Specifications over the –40°C to 125°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 11V, operating maximum VCC = 24V, no load on any outputs
unless otherwise noted.
Oscillator
Switching Frequency
CS = 500pF (No SYNC)
q
170
200
240
kHz
CS = 333pF (No SYNC)
q
240
280
340
kHz
Synchronization Frequency Range
CS = 500pF
q
245
400
kHz
CS = 333pF
q
345
500
kHz
CSET Ramp Valley Voltage
CS = 1000pF (No SYNC)
0.90
1.15
1.4
V
CSET Peak-to-Peak Voltage
CS = 1000pF (No SYNC)
2.4
V
Synchronization Pulse Threshold on SYNC Pin
Falling Edge VSYNC
2.5
V
Maximum Duty Cycle
VFB = VREF – 5mV, CS > 500pF
q
85
90
%
Gate Drivers (TGATE, BGATE)
VGBIAS
IGBIAS < 25mA
q
7.5
8.0
8.5
V
VTGATE High (VTGATE – VSW)ITGATE < 50mA, VBOOST = VGBIAS – 0.5V
q
567
V
VBGATE High
IBGATE < 50mA
q
5
6
7.5
V
VTGATE Low (VTGATE – VSW)ITGATE < – 50mA
q
0.5
V
VBGATE Low
IBGATE < – 50mA
q
0.5
V
Peak Gate Drive Current
10nF Load
1
A
Gate Drive Rise and Fall Time
1nF Load
25
ns
TYPICAL PERFOR A CE CHARACTERISTICS
IGBIAS (mA)
0
8.1
8.0
7.9
7.8
7.7
3710 G01
10
20
26
–40
°C
25
°C
125
°C
VCC (V)
8
1012141618202224
13
12
11
10
9
8
7
6
5
3710 G02
TA = 25°C
FREQUENCY (Hz)
10
120
80
40
0
–20
–0
–50
–100
–150
–180
3710 G03
PHASE
0dB, 10MHz
(–111
°)
GAIN
100
1k
10k
100k
1M
10M 100M
TA = 25°C
VGBIAS vs IGBIAS over Junction
Temperature
ICC vs VCC (Switching Off)
Voltage Amplifier VA Gain and
Phase
Note 3: 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 specified maximum operating junction
temperature may impair device reliability.



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