LTC1698E View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1698E Datasheet PDF : 24 Pages
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LTC1698
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VDD, PWRGD ....................................................... 13.2V
Input Voltage
MARGIN, VFB, OVPIN, ISNSGND, ISNS ... – 0.3V to 5.3V
SYNC ..................................................... – 14V to 14V
Output Voltage
VCOMP, ICOMP (Note 2) ......................... – 0.3V to 5.3V
Power Dissipation .............................................. 500mW
Operating Temperature Range
LTC1698E (Note 3) ............................ – 40°C to 85°C
LTC1698I ........................................... – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
VDD 1
CG 2
PGND 3
GND 4
OPTODRV 5
VCOMP 6
MARGIN 7
VFB 8
16 FG
15 SYNC
14 VAUX
13 ICOMP
12 ISNS
11 ISNSGND
10 PWRGD
9 OVPIN
GN PACKAGE
S PACKAGE
16-LEAD PLASTIC SSOP 16-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 130°C/W (GN)
TJMAX = 125°C, θJA = 110°C/W (SO)
ORDER PART
NUMBER
LTC1698EGN
LTC1698ES
LTC1698IGN
LTC1698IS
GN PART MARKING
1698
1698I
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The q indicates specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VDD = 8V, unless otherwise noted. (Note 4)
SYMBOL
VDD
VUVLO
IVDD
PARAMETER
Supply Voltage
Undervoltage Lockout
VDD Supply Current
MARGIN and Error Amplifier
VFB
Feedback Voltage
CONDITIONS
VFB, OVPIN, VISNS, VISNSGND = 0V,
CFG = CCG = 1000pF, CVAUX = 0.1µF,
VSYNC = 0V
fSYNC = 100kHz (Note 5)
MARGIN = Open, VCOMP = 1V (Note 7)
IVFB
VMARGIN
RMARGIN
∆VFB
GERR
BWERR
VCLAMP
IVCOMP
OPTODRV
GOPTO
BWOPTO
VOPTOHIGH
IOPTOSC
Feedback Input Current
MARGIN Voltage
MARGIN Input Resistance
Feedback Voltage Adjustment
Error Amplifier Open-Loop DC Gain
Error Amplifier Unity-Gain Bandwidth
Error Amplifier Output Clamp Voltage
Error Amplifier Source Current
Error Amplifier Sink Current
Opto Driver DC Gain
Opto Driver Unity-Gain Bandwidth
Opto Driver Output High Voltage
Opto Driver Output Short-Circuit Current
VFB = 1.233V
MARGIN = Open
VMARGIN = 3.3V
VMARGIN = 0V
VCOMP = 0.8V to 1.2V, Load = 2kΩ, 100pF
No Load (Note 6)
VFB = 0V
VFB = 0V
VFB = 5V, VCOMP = 1.233V
OVPIN, VISNS, VISNSGND = 0V
No Load (Note 6)
VFB, OVPIN, VISNSGND = 0V, VISNS = – 50mV,
IOPTODRV = –10mA
OVPIN, VISNSGND, VISNS = 0V, VFB = 1.233V
MIN TYP MAX
q6
8
12.6
4
q
1.8
4
5.0
1.223
q 1.215
q
q4
q –6
q 65
q
q3
1.233
1.233
0.05
1.65
16.5
5
–5
90
2
2
– 25
7
1.243
1.251
1
6
–4
– 10
q 4.75
5
5.25
1
q4
5
q – 50 – 25 – 10
UNITS
V
V
mA
mA
V
V
µA
V
kΩ
%
%
dB
MHz
V
mA
mA
V/V
MHz
V
mA
1698f
2
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