LT3825EFE#TRPBF Linear Technology, LT3825EFE#TRPBF Datasheet - Page 3

• Manufacturer Part Number: LT3825EFE#TRPBF
• Description: IC CNTRLR SYNC 16-TSSOP
• Manufacturer: Linear Technology
• Type: Flybackr

Specifications of LT3825EFE#TRPBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Frequency - Switching: 50kHz ~ 250kHz
• Voltage - Input: 12 ~ 18 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• Power - Output: 60W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Voltage - Output: -

PARAMETER
Reference Voltage Line Regulation
Feedback Amplifier Voltage Gain
Soft-Start Charging Current
Soft-Start Discharge Current
Control Pin Threshold (V
Gate Outputs
PG, SG Output High Level
PG, SG Output Low Level
PG, SG Output Shutdown Strength
PG Rise Time
SG Rise Time
PG, SG Fall Time
Current Amplifier
Switch Current Limit at Maximum V
ΔV
Sense Voltage Overcurrent Fault Voltage
Timing
Switching Frequency (f
Oscillator Capacitor Value (C
Minimum Switch On-Time (t
Flyback Enable Delay Time (t
PG Turn-On Delay Time (t
Maximum Switch Duty Cycle
SYNC Pin Threshold
SYNC Pin Input Resistance
Load Compensation
Load Comp to V
Feedback Pin Load Compensation Current
UVLO Function
UVLO Pin Threshold (V
UVLO Pin Bias Current
ELECTRICAL CHARACTERISTICS
junction temperature range, otherwise specifi cations are at T
R
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: 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.
Note 3: The LT3825E is guaranteed to meet performance specifications
from 0°C to 125°C. Specifications over the –40°C to 125°C operating
tON
SENSE
= 90k, R
/ΔV
C
PGDLY
SENSE
= 27.4k, R
Offset Voltage
OSC
UVLO
C
PGDLY
)
)
)
ON(MIN)
OSC
ED
)
)
)
ENDLY
)
C
= 90k, unless otherwise specifi ed.
CONDITIONS
12V ≤ V
V
V
V
Duty Cycle = Min
V
C
C
C
V
V
C
(Note 6)
V
V
V
V
C
SFST
SFST
UVLO
PG
SG
PG
SENSE
SENSE
OSC
RCMP
SENSE
UVLO
UVLO
= 1.2V to 1.7V
, C
= 1nF
= 1nF
= 100pF
= 1.5V
= 1.5V, V
SG
= 0V; I
= 1.2V
= 1.3V
+
+
+
with V
CC
= 20mV, V
= 1nF
≤ 18V
The
PG
SENSE
UVLO
, I
J
= 25°C. V
SG
l
FB
+
= 0V
denotes the specifi cations which apply over the full operating
= 20mA
= 0V
= 1.230V
junction temperature range are assured by design, characterization and
correlation with statistical process controls. Note that the maximum
ambient temperature is determined by specific operating conditions in
conjunction with board layout, the rated package thermal resistance and
other environmental factors.
Note 4: T
dissipation P
Note 5: Supply current does not include gate charge current to the
MOSFETs. See Applications Information.
Note 6: Component value range guaranteed by design.
CC
T
J
= 14V; PG, SG Open; V
= T
J
A
is calculated from the ambient temperature T
+ (P
D
according to the following formula:
D
• 40°C/W)
●
●
●
●
●
●
●
●
●
●
C
= 1.5V, V
1.215
–0.25
–4.50
MIN
0.8
6.6
16
88
84
33
85
SENSE
0.005
1.240
1400
0.01
0.07
1.53
–3.4
TYP
206
100
200
265
200
1.3
1.0
7.4
1.6
20
11
15
10
98
88
40
20
1
0
–
= 0V; R
A
LT3825
1.265
±0.25
–2.50
MAX
and power
0.02
0.05
110
230
110
200
8.0
2.3
2.1
25
CMP
= 1k,
UNITS
3825fc
3
%/V
kHz
V/V
V/V
mA
mV
mV
mV
kΩ
μA
μA
μA
μA
ns
ns
ns
pF
ns
ns
ns
%
V
V
V
V
V
V