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參數(shù)資料
| 型號： | LTC1877IMS8#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.5 A SWITCHING REGULATOR, 605 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | LEAD FREE, PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 234K |
| 代理商： | LTC1877IMS8#TRPBF |
LTC1877
3
1877fa
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC1877E is guaranteed to meet specications from 0°C to
85°C. Specications over the –40°C to 85°C operating temperature range
are assured by design, characterization and correlation with statistical
process controls. The LTC1877I is guaranteed over the full –40°C to 85°C
operating temperature range.
The l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VIN = 5V unless otherwise specied.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IPLL LPF
Phase Detector Output Current
Sinking Capability
Sourcing Capability
fPLLIN < fOSC
fPLLIN > fOSC
l
3
–3
10
–10
20
–20
μA
RPFET
RDS(ON) of P-Channel MOSFET
ISW = 100mA
0.65
0.85
Ω
RNFET
RDS(ON) of N-Channel MOSFET
ISW = –100mA
0.75
0.95
Ω
IPK
Peak Inductor Current
VFB = 0.7V, Duty Cycle < 35%
0.8
1.0
1.25
A
ILSW
SW Leakage
VRUN = 0V, VSW = 0V or 8.5V, VIN = 8.5V
±0.01
±1
μA
VSYNC/MODE
SYNC/MODE Threshold
l
0.3
1.0
1.5
V
ISYNC/MODE
SYNC/MODE Leakage Current
±0.01
±1
μA
VRUN
RUN Threshold
l
0.3
0.7
1.5
V
IRUN
RUN Input Current
±0.01
±1
μA
Note 3: TJ is calculated from the ambient temperature TA and power
dissipation PD according to the following formulas:
LTC1877EMS8: TJ = TA + (PD)(150°C/W)
Note 4: The LTC1877 is tested in a feedback loop which servos VFB to the
balance point for the error amplier (VITH = 1.2V).
Note 5: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
TYPICAL PERFORMANCE CHARACTERISTICS
Efciency vs Input Voltage
Efciency vs Output Current
INPUT VOLTAGE (V)
0
EFFICIENCY
(%)
2
4
68
1877 G01
10
100
95
90
85
80
75
70
65
60
55
50
12
VOUT = 2.5V
L = 10μH
Burst Mode OPERATION
ILOAD = 0.1mA
ILOAD = 1mA
ILOAD = 300mA
ILOAD = 100mA I
LOAD = 10mA
OUTPUT CURRENT (mA)
0.1
EFFICIENCY
(%)
10
1000
1877 G02
1.0
100
VIN = 3.6V
VIN = 7.2V
VIN = 3.6V
VIN = 7.2V
100
90
80
70
60
50
40
30
20
10
0
VOUT = 2.5V
L = 10μH
PULSE-SKIPPING MODE
Burst Mode OPERATION
OUTPUT CURRENT (mA)
0.1
EFFICIENCY
(%)
10
1000
95
90
85
80
75
70
65
60
55
1877 G03
1.0
100
L = 15μH
L = 10μH
VIN = 10V
VOUT = 3.3V
Burst Mode OPERATION
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| LTC1878EMS8 | 功能描述:IC REG BUCK SYNC ADJ 0.6A 8MSOP 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(biāo)準(zhǔn)包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC |
| LTC1878EMS8#PBF | 功能描述:IC REG BUCK SYNC ADJ 0.6A 8MSOP 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 |
| LTC1878EMS8#TR | 功能描述:IC REG BUCK SYNC ADJ 0.6A 8MSOP 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(biāo)準(zhǔn)包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC |
| LTC1878EMS8#TRPBF | 功能描述:IC REG BUCK SYNC ADJ 0.6A 8MSOP 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:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC |
| LTC1878EMS8PBF | 制造商:Linear Technology 功能描述: 制造商:Linear Technology 功能描述:DC-DC Converter Step-Down 2.65-6V MSOP8 |
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