參數(shù)資料
型號： LTC3776EUF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： Dual 2-Phase, No RSENSE Synchronous Controller for DDR/QDR Memory Termination
中文描述： 1 A DUAL SWITCHING CONTROLLER, 825 kHz SWITCHING FREQ-MAX, PQCC24
封裝： 4 X 4 MM, PLASTIC, MO-220-WGGD, QFN-24
文件頁數(shù)： 3/28頁
文件大?。?/td> 429K
代理商： LTC3776EUF
3
LTC3776
3776f
ELECTRICAL CHARACTERISTICS
range, otherwise specifications are at T
A
= 25
°
C. V
IN
= 4.2V unless otherwise specified.
PARAMETER
Output Voltage Load Regulation
The
●
denotes specifications that apply over the full operating temperature
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
The LTC3776E is guaranteed to meet specified performance from
0
°
C to 70
°
C. Specifications over the –40
°
C to 85
°
C operating 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)
Note 4:
Dynamic supply current is higher due to gate charge being
delivered at the switching frequency.
Note 5:
The LTC3776 is tested in a feedback loop that servos I
TH
to a
specified voltage and measures the resultant V
FB
voltage.
Note 6:
Peak current sense voltage is reduced dependent on duty cycle to
a percentage of value as shown in Figure 2.
CONDITIONS
I
TH
= 0.9V (Note 5)
I
TH
= 1.7V
(Note 5)
Measured at V
FB
with Respect to
Regulated Feedback Voltage
MIN
TYP
0.12
–0.12
10
13.3
MAX
0.5
–0.5
50
16
UNITS
%
%
nA
%
V
FB1
Input Current
Overvoltage Protect Threshold
10
Overvoltage Protect Hysteresis
Top Gate (TG) Drive 1, 2 Rise Time
Top Gate (TG) Drive 1, 2 Fall Time
Bottom Gate (BG) Drive 1, 2 Rise Time
Bottom Gate (BG) Drive 1, 2 Fall Time
Maximum Current Sense Voltage (Channel 1)
(SENSE1
+
– SW1)(
V
SENSE(MAX)
) (SOURCE)
3
40
40
50
40
125
85
204
147
100
245
–112
–75
–188
0.833
%
ns
ns
ns
ns
mV
mV
mV
mV
mV
mV
mV
mV
mV
ms
C
L
= 3000pF
C
L
= 3000pF
C
L
= 3000pF
C
L
= 3000pF
IPRG1 = Floating (Note 6)
IPRG1 = 0V
IPRG1 = V
IN
IPRG2 = Floating (Note 6)
IPRG2 = 0V
IPRG2 = V
IN
IPRG2 = Floating (Note 6)
IPRG2 = 0V
IPRG2 = V
IN
Time for V
FB1
to Ramp from 0.05V to 0.55V
●
●
●
●
●
●
110
70
185
127
85
215
–130
–90
–208
0.667
140
100
223
167
105
275
–94
–60
–168
1
Maximum Current Sense Voltage (Channel 2)
(SENSE2
+
– SW2)(
V
SENSE(MAX)
) (SOURCE)
Minimum Current Sense Voltage (Channel 2 Only)
(SENSE2
+
– SW2)(
V
SENSE(MAX)
) (SINK)
●
●
●
Soft-Start Time
Oscillator and Phase-Locked Loop
Oscillator Frequency
Spread Spectrum Disabled (SYNC/SSEN = GND)
PLLLPF = Floating
PLLLPF = 0V
PLLLPF = V
IN
SYNC/SSEN = V
IN
Minimum Switching Frequency
Maximum Switching Frequency
SYNC/SSEN Clocked
Minimum Synchronizable Frequency
Maximum Synchronizable Frequency
●
●
●
460
260
650
550
300
750
610
340
825
kHz
kHz
kHz
Spread Spectrum Frequency Range
450
580
kHz
kHz
Phase-Locked Loop Lock Range
●
●
200
1150
250
kHz
kHz
850
Phase Detector Output Current
Sinking
Sourcing
PGOOD Output
PGOOD Voltage Low
PGOOD Trip Level
f
OSC
> f
SYNC/FCB
f
OSC
< f
SYNC/FCB
–4
4
μ
A
μ
A
I
PGOOD
Sinking 1mA
V
FB
with Respect to Set Output Voltage
V
FB
< Regulated Feedback Voltage, Ramping Positive
V
FB
< Regulated Feedback Voltage, Ramping Negative
V
FB
> Regulated Feedback Voltage, Ramping Negative
V
FB
> Regulated Feedback Voltage, Ramping Positive
125
mV
–13
–16
7
10
–10.0
–13.3
10.0
13.3
–7
–10
13
16
%
%
%
%
相關(guān)PDF資料
PDF描述
LTC3776EGN Dual 2-Phase, No RSENSE Synchronous Controller for DDR/QDR Memory Termination
LTC3780 DIODE SCHOTTKY DUAL ISOLATED 25V 150mW 0.33V-vf 200mA-IFM 2mA-IF 0.5uA-IR SOT-563 3K/REEL
LTC3780IG High Efficiency, Synchronous, 4-Switch Buck-Boost Controller
LTC3780IUH High Efficiency, Synchronous, 4-Switch Buck-Boost Controller
LTC3780EG DIODE SCHOTTKY SINGLE 25V 200mW 0.4V-vf 200mA-IFM 10mA-IF 0.5uA-IR SOD-123 3K/REEL
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC3776EUF#PBF 功能描述:IC CNTRLR SYNC DUAL 24-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件
LTC3776EUF#TR 制造商:Linear Technology 功能描述:DC DC Cntrlr Dual-OUT Sync Step Down 2.75V to 9.8V Input 24-Pin QFN EP T/R
LTC3776EUF#TRPBF 功能描述:IC CNTRLR SYNC DUAL 24-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件
LTC3778EF 功能描述:IC REG CTRLR BUCK PWM CM 20TSSOP RoHS:否 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: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)
LTC3778EF#PBF 功能描述:IC REG CTRLR BUCK PWM CM 20TSSOP 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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*