參數(shù)資料
型號(hào)： LT1248
廠商： Linear Technology Corporation
英文描述： Octal D-Type Transparent Latches with 3-state Outputs 20-SO 0 to 70
中文描述： 功率因數(shù)控制器
文件頁數(shù)： 3/12頁
文件大?。?/td> 154K
代理商： LT1248
3
LT1248
I
M
I
AC
(VA
OUT
– 2)
2
Note 2:
Multiplier Gain Constant: K =
ELECTRICAL C
ture range, otherwise specifications are at T
A
= 25
°
C. Maximum operating voltage (V
MAX
) = 25V, V
CC
= 18V, R
SET
= 15k to GND,
C
SET
= 1nF to GND, I
AC
= 100
μ
A, I
SENSE
= 0V, CA
OUT
= 3.5V, VA
OUT
= 5V, OVP = 7.5V, no load on any outputs, unless otherwise noted.
PARAMETER
CONDITIONS
Current Amplifier
Current Amp Short-Circuit Current
CA
OUT
= 0V
Input Range, I
SENSE
, M
OUT
(Linear Operation)
Reference
Reference Output Voltage
I
REF
= 0mA, T
A
= 25
°
C
V
REF
Load Regulation
–5mA < I
REF
< 0mA
V
REF
Line Regulation
11.5V < V
CC
< V
MAX
V
REF
Short-Circuit Current
V
REF
= 0V
V
REF
Worst Case
Load, Line, Temperature
Current Limit
PK
LIM
Offset Voltage
PK
LIM
Input Current
PK
LIM
= –0.1V
PK
LIM
to GTDR Propagation Delay
PK
LIM
Falling from 50mV to –50mV
Multiplier
Multiplier Output Current
I
AC
= 100
μ
A, R
SET
= 15k
Multiplier Output Current Offset
R
AC
= 1M from I
AC
to GND
Multiplier Maximum Output Current
I
AC
= 450
μ
A, R
SET
= 15k, VA
OUT
= 7V, M
OUT
= 0V
Multiplier Gain Constant (Note 2)
I
AC
Input Resistance
I
AC
from 50
μ
A to 1mA
Oscillator
Oscillator Frequency
R
SET
= 15k, C
SET
= 1000pF
R
SET
= 15k, C
SET
= 1500pF
C
SET
Ramp Peak-to-Peak Amplitude
C
SET
Ramp Valley Voltage
Synchronization Pulse Threshold on EN/SYNC Pin
Pulse Low = 3.5V, High = 7V, Width > 200ns
Synchronization Frequency Range
Overvoltage Comparator
Comparator Trip Voltage Ratio (V
TRIP
/V
REF
)
Hysteresis
OVP Bias Current
OVP = 7.5V
OVP Propagation Delay
Gate Driver
Max GTDR Output Voltage
0mA Load, 18V < V
CC
GTDR Output High
–200mA Load, 11.5V
≤
V
CC
≤
15V
GTDR Output Low (Device Unpowered)
V
CC
= 0V, 50mA Load (Sinking)
GTDR Output Low (Device Active)
200mA Load (Sinking)
10mA Load
Peak GTDR Current
10nF from GTDR to GND
GTDR Rise and Fall Time
1nF from GTDR to GND
GTDR Max Duty Cycle
HARA TERISTICS
The
G
denotes specifications which apply over the full operating tempera-
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired
MIN
TYP
MAX
UNITS
G
5
14
30
1
mA
G
–0.3
V
7.39
7.50
5
5
28
7.5
7.60
V
mV
mV
mA
G
–20
12
7.32
20
50
7.68
G
G
V
G
–15
15
mV
μ
A
ns
G
–50
400
–100
35
μ
A
μ
A
μ
A
V
–2
k
G
–0.05
–260
0.035
32
–0.5
–235
G
–286
15
50
G
G
85
58
4.35
1.25
4.5
1.2
100
68
4.7
1.4
5.6
115
78
5.0
1.55
6.5
1.6
kHz
kHz
V
V
V
R
SET
= 15k, C
SET
= 1000pF
G
f
NOM
G
1.04
1.05
0.35
–50
100
1.06
V
G
–250
nA
ns
G
12
15
17.5
V
V
V
V
V
A
G
V
CC
– 3.0
G
0.9
0.5
0.2
2
25
96
1.5
1
0.4
G
G
ns
%
90
相關(guān)PDF資料
PDF描述
LT1248C Octal D-Type Transparent Latches with 3-state Outputs 20-SO 0 to 70
LT1248CN Octal D-Type Transparent Latches with 3-state Outputs 20-SO 0 to 70
LT1248CS Replaced by SN74ALS374A : Octal D-Type Edge Triggered Flip-Flops with 3-State Outputs 20-SSOP 0 to 70
LT1248I Power Factor Controller
LT1248IN Octal D-Type Edge Triggered Flip-Flops with 3-State Outputs 20-SSOP 0 to 70
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT1248C 制造商:LINER 制造商全稱:Linear Technology 功能描述:Power Factor Controller
LT1248CN 功能描述:IC PFC CTRLR AVERAGE CURR 16DIP RoHS:否 類別:集成電路 (IC) >> PMIC - PFC（功率因數(shù)修正） 系列:- 產(chǎn)品培訓(xùn)模塊:GreenChip Synchronous Rectification Control Family of ICs 標(biāo)準(zhǔn)包裝:1 系列:- 模式:間歇導(dǎo)電（DCM） 頻率 - 開關(guān):- 電流 - 啟動(dòng):- 電源電壓:8.6 V ~ 38 V 工作溫度:-20°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SO 包裝:Digi-Reel® 其它名稱:568-5348-6
LT1248CN#PBF 功能描述:IC PFC CTRLR AVERAGE CURR 16DIP RoHS:是 類別:集成電路 (IC) >> PMIC - PFC（功率因數(shù)修正） 系列:- 產(chǎn)品培訓(xùn)模塊:GreenChip Synchronous Rectification Control Family of ICs 標(biāo)準(zhǔn)包裝:1 系列:- 模式:間歇導(dǎo)電（DCM） 頻率 - 開關(guān):- 電流 - 啟動(dòng):- 電源電壓:8.6 V ~ 38 V 工作溫度:-20°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SO 包裝:Digi-Reel® 其它名稱:568-5348-6
LT1248CN#PBF 制造商:Linear Technology 功能描述:IC PFC CURRENT MODE 25V DI 制造商:Linear Technology 功能描述:IC, PFC, CURRENT MODE, 25V, DIP-16
LT1248CS 功能描述:IC PFC CTRLR AVERAGE CURR 16SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - PFC（功率因數(shù)修正） 系列:- 產(chǎn)品培訓(xùn)模塊:GreenChip Synchronous Rectification Control Family of ICs 標(biāo)準(zhǔn)包裝:1 系列:- 模式:間歇導(dǎo)電（DCM） 頻率 - 開關(guān):- 電流 - 啟動(dòng):- 電源電壓:8.6 V ~ 38 V 工作溫度:-20°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SO 包裝:Digi-Reel® 其它名稱:568-5348-6
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