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參數(shù)資料
| 型號： | LTC3780EG |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | DIODE SCHOTTKY SINGLE 25V 200mW 0.4V-vf 200mA-IFM 10mA-IF 0.5uA-IR SOD-123 3K/REEL |
| 中文描述： | 3 A SWITCHING CONTROLLER, 440 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封裝： | 5.30 MM, PLASTIC, SSOP-24 |
| 文件頁數(shù)： | 4/28頁 |
| 文件大?。?/td> | 421K |
| 代理商： | LTC3780EG |
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4
LTC3780
3780f
The
●
indicates specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
°
C. V
IN
= 15V unless otherwise noted.
SYMBOL
PARAMETER
t
ON(MIN,BOOST)
Minimum On-Time for Main Switch in
Boost Operation
t
ON(MIN,BUCK)
Minimum On-Time for Synchronous
Switch in Buck Operation
Internal V
CC
Regulator
V
INTVCC
Internal V
CC
Voltage
V
LDO(LOADREG)
Internal V
CC
Load Regulation
V
EXTVCC
EXTV
CC
Switchover Voltage
V
EXTVCC(HYS)
EXTV
CC
Switchover Hysteresis
V
EXTVCC
EXTV
CC
Switch Drop Voltage
Oscillator and Phase-Locked Loop
f
NOM
Nominal Frequency
f
LOW
Lowest Frequency
f
HIGH
Highest Frequency
R
PLLIN
PLLIN Input Resistance
I
PLLLPF
Phase Detector Output Current
ELECTRICAL CHARACTERISTICS
CONDITIONS
Switch C (Note 6)
MIN
TYP
200
MAX
240
UNITS
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
T
J
for the QFN package is calculated from the temperature T
A
and
power dissipation P
D
according to the following formula:
T
J
= T
A
+ (P
D
34
°
C/W)
Note 3:
The IC is tested in a feedback loop that servos V
ITH
to a specified
voltage and measures the resultant V
OSENSE
.
Note 4:
Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 5:
Rise and fall times are measured using 10% and 90% levels. Delay
times are measured using 50% levels.
Note 6:
The minimum on-time condition is specified for an inductor peak-
to-peak ripple current
≥
40% of I
MAX
(see minimum on-time
considerations in the Applications Information section).
Note 7:
The LTC3780E is guaranteed to meet performance specifications
from 0
°
C to 85
°
C. Performance over the –40
°
C to 85
°
C operating
temperature range is assured by design, characterization and correlation
with statistical process controls. The LTC3780I is guaranteed and tested
over the –40
°
C to 85
°
C operating temperature range.
ns
Switch B (Note 6)
180
220
ns
7V < V
IN
< 30V, V
EXTVCC
= 5V
I
CC
= 0mA to 20mA, V
EXTVCC
= 5V
I
CC
= 20mA, V
EXTVCC
Rising
●
5.7
6
6.3
2
V
%
V
0.2
5.7
200
150
●
5.4
mV
mV
I
CC
= 20mA, V
EXTVCC
= 6V
300
V
PLLFLTR
= 1.2V
V
PLLFLTR
= 0V
V
PLLFLTR
= 2.4V
260
170
340
300
200
400
50
–15
15
330
220
440
kHz
kHz
kHz
k
μ
A
μ
A
f
PLLIN
< f
OSC
f
PLLIN
> f
OSC
PGOOD Output
V
FBH
V
FBL
V
FB(HYST)
V
PGL
I
PGOOD
PGOOD Upper Threshold
PGOOD Lower Threshold
PGOOD Hysteresis
PGOOD Low Voltage
PGOOD Leakage Current
V
OSENSE
Rising
V
OSENSE
Falling
V
OSENSE
Returning
I
PGOOD
= 2mA
V
PGOOD
= 5V
5.5
–5.5
7.5
–7.5
2.5
0.1
10
–10
%
%
%
V
μ
A
0.3
±
1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3780EG#PBF | 功能描述:IC REG CTRLR BST PWM CM 24-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標(biāo)準(zhǔn)包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產(chǎn)品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR |
| LTC3780EG#TR | 制造商:Linear Technology 功能描述:DC DC Cntrlr Dual-OUT Synchronous Boost/Buck Controller 4V to 36V Input 24-Pin SSOP T/R |
| LTC3780EG#TRPBF | 功能描述:IC REG CTRLR BST PWM CM 24-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(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 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:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX |
| LTC3780EGPBF | 制造商:Linear Technology 功能描述:4-Switch Buck-Boost Controller SSOP24 |
| LTC3780EUH | 制造商:Linear Technology 功能描述:DC DC Cntrlr Dual-OUT Synchronous Boost/Buck Controller 4V to 36V Input 32-Pin QFN EP |
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