参数资料
型号: LTC1698IS#TRPBF
厂商: Linear Technology
文件页数: 2/24页
文件大小: 0K
描述: IC REG CTRLR ISO PWM CM 16-SOIC
标准包装: 2,500
PWM 型: 电流模式
输出数: 1
频率 - 最大: 400kHz
电源电压: 6 V ~ 12.6 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
LTC1698
ABSOLUTE M AXI M U M RATINGS
(Note 1)
PACKAGE/ORDER I N FOR M ATIO N
V DD , PWRGD ....................................................... 13.2V
TOP VIEW
ORDER PART
Input Voltage
MARGIN, V FB , OVPIN, I SNSGND , I SNS ... – 0.3V to 5.3V
SYNC ..................................................... – 14V to 14V
Output Voltage
V COMP , I COMP (Note 2) ......................... – 0.3V to 5.3V
Power Dissipation .............................................. 500mW
V DD
CG
PGND
GND
OPTODRV
V COMP
1
2
3
4
5
6
16 FG
15 SYNC
14 V AUX
13 I COMP
12 I SNS
11 I SNSGND
NUMBER
LTC1698EGN
LTC1698ES
LTC1698IGN
LTC1698IS
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
MARGIN 7 10 PWRGD
V FB 8 9 OVPIN
GN PACKAGE S PACKAGE
16-LEAD PLASTIC SSOP 16-LEAD PLASTIC SO
T JMAX = 125 ° C, θ JA = 130 ° C/W (GN)
T JMAX = 125 ° C, θ JA = 110 ° C/W (SO)
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 T A = 25 ° C. V DD = 8V, unless otherwise noted. (Note 4)
SYMBOL
V DD
PARAMETER
Supply Voltage
CONDITIONS
q
MIN
6
TYP
8
MAX
12.6
UNITS
V
V UVLO
I VDD
Undervoltage Lockout
V DD Supply Current
V FB , OVPIN, V ISNS , V ISNSGND = 0V,
C FG = C CG = 1000pF, C VAUX = 0.1 μ F,
4
V
V SYNC = 0V
f SYNC = 100kHz (Note 5)
q
1.8
5.0
4
mA
mA
MARGIN and Error Amplifier
V FB
I VFB
V MARGIN
Feedback Voltage
Feedback Input Current
MARGIN Voltage
MARGIN = Open, V COMP = 1V (Note 7)
V FB = 1.233V
MARGIN = Open
q
q
1.223
1.215
1.233
1.233
0.05
1.65
1.243
1.251
1
V
V
μ A
V
R MARGIN
MARGIN Input Resistance
16.5
k ?
? V FB
G ERR
Feedback Voltage Adjustment
Error Amplifier Open-Loop DC Gain
V MARGIN = 3.3V
V MARGIN = 0V
V COMP = 0.8V to 1.2V, Load = 2k ? , 100pF
q
q
q
4
–6
65
5
–5
90
6
–4
%
%
dB
BW ERR
V CLAMP
Error Amplifier Unity-Gain Bandwidth
Error Amplifier Output Clamp Voltage
No Load (Note 6)
V FB = 0V
2
2
MHz
V
I VCOMP
Error Amplifier Source Current
Error Amplifier Sink Current
V FB = 0V
V FB = 5V, V COMP = 1.233V
q
q
3
– 25
7
– 10
mA
mA
OPTODRV
G OPTO
Opto Driver DC Gain
OVPIN, V ISNS , V ISNSGND = 0V
q
4.75
5
5.25
V/V
BW OPTO
V OPTOHIGH
Opto Driver Unity-Gain Bandwidth
Opto Driver Output High Voltage
No Load (Note 6)
V FB , OVPIN, V ISNSGND = 0V, V ISNS = – 50mV,
1
MHz
I OPTODRV = –10mA
q
4
5
V
I OPTOSC
Opto Driver Output Short-Circuit Current
OVPIN, V ISNSGND , V ISNS = 0V, V FB = 1.233V
q
– 50
– 25
– 10
mA
1698f
2
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