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參數(shù)資料
| 型號： | LTC3548 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 12-Bit To 24-Bit Registered Bus Exchanger With 3-State Outputs 56-SSOP -40 to 85 |
| 中文描述： | 雙同步，400mA/800mA，2.25MHz降壓直流/直流穩(wěn)壓器 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 239K |
| 代理商： | LTC3548 |
LTC3548
3
3548f
2.5
2.4
2.3
2.2
2.1
2.0
F
10
8
6
4
2
0
–2
–4
–6
–8
–10
F
SUPPLY VOLTAGE (V)
2
3548 G06
3
4
5
6
INPUT VOLTAGE (V)
2
3548 G04
3548 G01
3548 G02
3548 G03
3
4
5
6
TEMPERATURE (
°
C)
–50
25
75
3548 G05
–25
0
50
100
125
100
95
90
85
80
75
70
65
60
E
V
IN
= 3.6V
V
OUT
= 1.8V
I
= 180mA
CHANNEL 1; CIRCUIT OF FIGURE 3
V
IN
= 3.6V
V
OUT
= 1.8V
I
= 30mA
CHANNEL 1; CIRCUIT OF FIGURE 3
V
IN
= 3.6V
V
OUT
= 1.8V
I
= 80mA TO 800mA
CHANNEL 1; CIRCUIT OF FIGURE 3
V
= 1.8V, CHANNEL 1
Burst Mode OPERATION
CIRCUIT OF FIGURE 3
800mA
10mA
100mA
1mA
SW
5V/DIV
V
OUT
20mV/DIV
I
L
200mA/DIV
SW
5V/DIV
V
10mV/DIV
I
L
200mA/DIV
V
200mV/DIV
I
L
500mA/DIV
I
500mA/DIV
2
μ
s/DIV
1
μ
s/DIV
20
μ
s/DIV
V
IN
= 3.6V
TYPICAL PERFOR AU
Load Step
Burst Mode Operation
Pulse Skipping Mode
Efficiency vs Input Voltage
Oscillator Frequency vs Supply
Voltage
Oscillator Frequency vs
Temperature
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired. No pin shall exceed 6V.
Note 2:
The LTC3548 is guaranteed to meet specified performance from
0
°
C to 70
°
C. Specifications over the –40
°
C and 85
°
C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3:
The LTC3548 is tested in a proprietary test mode that connects
V
FB
to the output of the error amplifier.
Note 4:
Dynamic supply current is higher due to the internal gate charge
being delivered at the switching frequency.
Note 5:
T
J
is calculated from the ambient T
A
and power dissipation P
D
according to the following formula: T
J
= T
A
+ (P
D
θ
JA
).
Note 6:
The DFN switch on-resistance is guaranteed by correlation to
wafer level measurements.
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. V
IN
= 3.6V, unless otherwise specified. (Note 2)
SYMBOL
PARAMETER
POR
Power-On Reset Threshold
Power-On Reset On-Resistance
Power-On Reset Delay
V
RUN
RUN Threshold
I
RUN
RUN Leakage Current
The
●
denotes the specifications which apply over the full operating
CONDITIONS
V
FB
Ramping Down, MODE/SYNC = 0V
MIN
TYP
–8.5
100
262,144
1
0.01
MAX
UNITS
%
200
Cycles
●
0.3
1.5
1
V
●
μ
A
T
A
= 25
°
C unless otherwise specified.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3548-1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Synchronous, Fixed Output 2.25MHz Step-Down DC/DC Regulator |
| LTC3548-2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Synchronous, Fixed/Adjustable Output, 2.25MHz Step-Down DC/DC Regulator |
| LTC3548A | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Synchronous 400mA/800mA, 2.25MHz Step-Down DC/DC Regulator |
| LTC3548AEDD | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Synchronous 400mA/800mA, 2.25MHz Step-Down DC/DC Regulator |
| LTC3548AEDD#PBF | 功能描述:IC REG BUCK SYNC ADJ DL 10DFN 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(biāo)準(zhǔn)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(yīng)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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