參數(shù)資料
型號： LTC1874EGN
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： Quadruple 2-Input Positive-AND Gate 14-VQFN -40 to 85
中文描述： 1 A SWITCHING CONTROLLER, 650 kHz SWITCHING FREQ-MAX, PDSO16
封裝： 0.150 INCH, PLASTIC, SSOP-16
文件頁數(shù)： 2/12頁
文件大?。?/td> 180K
代理商： LTC1874EGN
2
LTC1874
ABSOLUTE
AXI
U
RATIU
W
(Note 1)
Input Supply Voltage (V
IN
, PV
IN
) ...............–0.3V to 10V
SENSE
–
, PGATE Voltages.............–0.3V to (V
IN
+ 0.3V)
V
FB
, I
TH
/RUN Voltages ..............................–0.3V to 2.4V
PGATE Peak Output Current (<10
μ
s) ....................... 1A
Storage Ambient Temperature Range... –65
°
C to 150
°
C
Operating Temperature Range (Note 2).. –40
°
C to 85
°
C
Junction Temperature (Note 3).............................150
°
C
Lead Temperature (Soldering, 10 sec)..................300
°
C
W
W
PACKAGE/ORDER I
FOR
ATIO
W
U
U
T
JMAX
= 150
°
C,
θ
JA
= 135
°
C/W
GN PART MARKING
ORDER PART
NUMBER
LTC1874EGN
1874
Consult factory for parts specified with wider operating temperature ranges.
All specifications apply to each controller. The
G
denotes specifications that
apply over the full operating temperature range, otherwise specifications are at T
A
= 25
°
C. V
IN
= 4.2V unless otherwise specified.
(Note 2)
PARAMETER
Input DC Supply Current (Per Controller)
Normal Operation
Sleep Mode
Shutdown
UVLO
Undervoltage Lockout Threshold
CONDITIONS
Typicals at V
IN
= 4.2V (Note 4)
2.4V
≤
V
IN
≤
9.8V
2.4V
≤
V
IN
≤
9.8V
2.4V
≤
V
IN
≤
9.8V, V
ITH
/RUN = 0V
V
IN
< UVLO Threshold
V
IN
Falling
V
IN
Rising
MIN
TYP
MAX
UNITS
270
230
8
6
2.0
2.3
0.35
0.5
0.800
0.800
0.05
2.5
2.5
10
0.860
20
550
120
40
40
120
420
370
22
10
2.35
2.40
0.55
0.85
0.820
0.830
μ
A
μ
A
μ
A
μ
A
V
V
V
μ
A
V
V
G
1.55
1.85
0.15
0.25
0.780
0.770
Shutdown Threshold (at I
TH
/RUN)
Start-Up Current Source
Regulated Feedback Voltage
G
V
ITH
/RUN = 0V
T
A
= 0
°
C to 70
°
C (Note 5)
T
A
= –40
°
C to 85
°
C (Note 5)
2.4V
≤
V
IN
≤
9.8V (Note 5)
I
TH
/RUN Sinking 5
μ
A (Note 5)
I
TH
/RUN Sourcing 5
μ
A (Note 5)
(Note 5)
Measured at V
FB
G
G
Output Voltage Line Regulation
Output Voltage Load Regulation
mV/V
mV/
μ
A
mV/
μ
A
V
FB
Input Current
Overvoltage Protect Threshold
Overvoltage Protect Hysteresis
Oscillator Frequency
50
nA
V
mV
kHz
kHz
ns
ns
mV
0.820
0.895
V
FB
= 0.8V
V
FB
= 0V
C
LOAD
= 3000pF
C
LOAD
= 3000pF
(Note 6)
500
650
Gate Drive Rise Time
Gate Drive Fall Time
Peak Current Sense Voltage
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
The LTC1874E is guaranteed to meet performance specifications
from 0
°
C to 70
°
C. Specifications over the –40
°
C to 85
°
C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3:
T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formula:
T
J
= T
A
+ (P
D
θ
JA
°
C/W)
1
2
3
4
5
6
7
8
TOP VIEW
GN PACKAGE
16-LEAD NARROW PLASTIC SSOP
16
15
14
13
12
11
10
9
V
IN1
SENSE1
–
GND1
V
FB1
I
TH
/RUN2
PGND2
PGATE2
PV
IN2
PV
IN1
PGATE1
PGND1
I
TH
/RUN1
V
FB2
GND2
SENSE2
–
V
IN2
ELECTRICAL CHARACTERISTICS
Note 4:
Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 5:
Each controller in the LTC1874 is individually tested in a feedback
loop that servos V
FB
to the output of the error amplifier.
Note 6:
Peak current sense voltage is reduced dependent upon duty cycle
to a percentage of value as given in Figure 2.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1874EGN#PBF 功能描述:IC REG CTRLR BUCK PWM CM 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
LTC1874EGN#TR 功能描述:IC REG CTRLR BUCK PWM CM 16-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
LTC1874EGN#TRPBF 功能描述:IC REG CTRLR BUCK PWM CM 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
LTC1875EGN 功能描述:IC REG BUCK SYNC ADJ 1.5A 16SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應商設(shè)備封裝:10-MSOP 裸露焊盤
LTC1875EGN#PBF 功能描述:IC REG BUCK SYNC ADJ 1.5A 16SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標準包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關(guān):2MHz 電流 - 輸出:500mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 包裝:帶卷 (TR) 供應商設(shè)備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2
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