Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

LTC4085 Datasheet(PDF) 11 Page - Linear Technology

Part # LTC4085
Description  36V, Low Loss Dual PowerPath Controllers for Large PFETs
Download  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4085 Datasheet(HTML) 11 Page - Linear Technology

Back Button LTC4085 Datasheet HTML 4Page - Linear Technology LTC4085 Datasheet HTML 5Page - Linear Technology LTC4085 Datasheet HTML 6Page - Linear Technology LTC4085 Datasheet HTML 7Page - Linear Technology LTC4085 Datasheet HTML 8Page - Linear Technology LTC4085 Datasheet HTML 9Page - Linear Technology LTC4085 Datasheet HTML 10Page - Linear Technology LTC4085 Datasheet HTML 11Page - Linear Technology LTC4085 Datasheet HTML 12Page - Linear Technology  
Zoom Inzoom in Zoom Outzoom out
 11 / 12 page
background image
LTC4416/LTC4416-1

4416fa
Overvoltage
V
V
R A R c R E
R c R E
V
k
FAIL
ETH
=
+
=
||
||
.
2
2
2
2
2
1 222
221
++
=
24 9 187
24 9 187
13 51
. ||
. ||
.
k
k
k
k
V
V
V
R A R c
R c
V
k
k
RESTORE
ETH
=
+
=
+
.
.
2
2
2
1 222
221 24 9
244 9
12 07
.
.
k
V
=
The over and undervoltage lockout circuits are shown here
working in tandem. It is possible to configure the circuit
for either over or undervoltage lockout by using only one
of the voltage paths and eliminating the components from
the other. Refer to Figure 7 for an LTC4416-1 configured
for overvotlage protection. If the input does not go below
ground, transistor Q1 can be eliminated.
The LTC4416-1 should be used in this configuration rather
than the LTC4416 because the LTC4416-1 will turn-off
rapidly if an over or undervoltage condition is detected.
RefertoFigure8foracomparisonofthetransientresponse
of the two ICs using the circuit configuration of Figure 6.
The LTC4416 will not turn-off quickly in an overvoltage
or undervoltage condition because the “fast-off” feature
is not enabled. This will cause the output to travel beyond
the desired range.
APPLICATIO S I FOR ATIO
Figure 9 contains a rapidly changing input voltage on a
much smaller time scale in comparison to Figure 8. The
LTC4416 will require the tE(OFF) time prior to the rapid pull-
up current being applied. The gate voltage will be pulled
high with IG(OFF) which has a minimum current of 500µA.
The discharge time of the gate will be dependent on the
capacitance of the external FET and the initial gate-source
voltage of the circuit. The total time delay will equal:
t
t
t
t
c
V
I
DELAY
E OFF
DIScHARGE
E OFF
GS
G
=
+
=
+
(
)
(
)
(
O
OFF)
Figure 8. Transient Response of the LTC4416 vs the LTC4416-1
Light Load with a Large Capacitor on VOUT
Figure 9. Close Up of the Transient Response of the LTC4416-1
to a Rapidly Rising Input
Information furnished by Linear Technology corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
Figure 7. LTC4416-1 Configured for Overvoltage Protection
LTC4416-1
H1
E1
GND
E2
H2
G1
V1
VS
V2
G2
R2C
24.9k
GND
VIN
R2E
187k
VTH2 WITH
HYSTERESIS
VOUT
TO
LOAD
4416 F07
R1A
100k
Q1
Q2
R2A
221k
5
0
0
20
VIN
VOUT
LTC4416-1
VOUT
LTC4416
40
TIME (ms)
4416 F08
60
80
10
15
20
VOUT
LTC4416-1
VOUT
LTC4416
13.40
13.45
LTC4416-1
GATE DISCHARGE TIME
= C
13.50
13.55
13.60
VIN
LTC4416
0
0
10
20
TIME (
µs)
4416 F09
30
5
15
tE(OFF)
25
35
40
∆V
IG(OFF)


Similar Part No. - LTC4085

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LTC4085 LINER-LTC4085 Datasheet
276Kb / 24P
   USB Power Manager with Ideal Diode Controller and Li-Ion Charger
LTC4085 LINER-LTC4085 Datasheet
290Kb / 24P
   USB Power Manager with Ideal Diode Controller and Li-Ion Charger
LTC4085-1 LINER-LTC4085-1 Datasheet
305Kb / 24P
   USB Power Manager with Ideal Diode Controller and 4.1V Li-Ion Charger
LTC4085-1 LINER-LTC4085-1_15 Datasheet
287Kb / 24P
   USB Power Manager with Ideal Diode Controller and 4.1V Li-Ion Charger
LTC4085-3 LINER-LTC4085-3 Datasheet
280Kb / 24P
   USB Power Manager with Ideal Diode Controller and 3.95V Li-Ion Charger
More results

Similar Description - LTC4085

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LTC4416-1 LINER-LTC4416-1_15 Datasheet
256Kb / 12P
   36V, Low Loss Dual PowerPath Controllers for Large PFETs
LTC4416 LINER-LTC4416 Datasheet
209Kb / 12P
   36V, Low Loss Dual PowerPath Controllers for Large PFETs
LTC4416 LINER-LTC4416_15 Datasheet
256Kb / 12P
   36V, Low Loss Dual PowerPath Controllers for Large PFETs
LTC4414 LINER-LTC4414_15 Datasheet
175Kb / 12P
   36V, Low Loss PowerPath Controller for Large PFETs
LTC4414 LINER-LTC4414 Datasheet
166Kb / 12P
   36V, Low Loss PowerPathTM Controller for Large PFETs
LTC4412HV LINER-LTC4412HV_15 Datasheet
182Kb / 12P
   36V, Low Loss PowerPath Controller in ThinSOT
LTC4412 LINER-LTC4412_15 Datasheet
405Kb / 14P
   Low Loss PowerPath Controller in ThinSOT
LTC1479 LINER-LTC1479_15 Datasheet
384Kb / 24P
   PowerPath Controller for Dual Battery Systems
LTC1473L LINER-LTC1473L_15 Datasheet
170Kb / 16P
   Dual Low Voltage PowerPath Switch Driver
LTC3118 LINER-LTC3118_15 Datasheet
726Kb / 38P
   18V, 2A Buck-Boost DC/DC Converter with Low-Loss Dual Input PowerPath
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com