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參數(shù)資料
| 型號： | LTC3880EUJ-1#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.1 A DUAL SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC40 |
| 封裝： | 6 X 6 MM, LEAD FREE, PLASTIC, WJJD-2, QFN-40 |
| 文件頁數(shù)： | 91/112頁 |
| 文件大?。?/td> | 2182K |
| 代理商： | LTC3880EUJ-1#PBF |
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LTC3880/LTC3880-1
8
3880fa
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at TA = 25°C. (Note 2) VIN = 12V, VRUN0,1 = 3.3V, fSYNC = 500kHz (externally
driven) unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Digital Inputs SHARE_CLK, WP
VIH
Input High Threshold Voltage
l
1.5
1.8
V
VIL
Input Low Threshold Voltage
l
0.6
1
V
Leakage Current SDA, SCL, ALERT, RUN0, RUN1
IOL
Input Leakage Current
0V ≤ VPIN ≤ 5.5V
l
±5
A
Leakage Current GPIO0, GPIO1
IGL
Input Leakage Current
0V ≤ VPIN < 3.6V
l
±2
A
Digital Filtering of GPIO0, GPIO1
IFLTG
Input Digital Filtering GPIO
3
s
Digital Filtering of RUN0, RUN1
IFLTG
Input Digital Filtering RUN
10
s
PMBus Interface Timing Characteristics
fSMB
Serial Bus Operating Frequency
l
10
400
kHz
tBUF
Bus Free Time Between Stop and Start
l
1.3
s
tHD,STA
Hold time After Repeated Start Condition.
After this Period, the First Clock is Generated
l
0.6
s
tSU,STA
Repeated Start Condition Setup Time
l
0.6
s
tSU,STO
Stop Condition Setup Time
l
0.6
s
tHD,DAT
Data Hold Time
Receiving Data
Transmitting Data
l
0
0.3
0.9
s
tSU,DAT
Data Setup Time
Receiving Data
l
0.1
s
tTIMEOUT_SMB Stuck PMBus Timer Non-Block Reads
Stuck PMBus Timer Block Reads
Measured from the Last PMBus Start Event
32
150
ms
tLOW
Serial Clock Low Period
l
1.3
10000
s
tHIGH
Serial Clock High Period
l
0.6
s
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 LTC3880/LTC3880-1 are tested under pulsed load conditions
such that TJ ≈ TA. The LTC3880E/LTC3880E-1 are guaranteed to meet
performance specifications from 0°C to 85°C. Specifications over the
–40°C to 105°C operating junction temperature range are assured by
design, characterization and correlation with statistical process controls.
The LTC3880I/LTC388I-1 are guaranteed over the full –40°C to 125°C
operating junction temperature range. TJ is calculated from the ambient
temperature TA and power dissipation PD according to the following
formula:
TJ = TA + (PD θJA)
The maximum ambient temperature consistent with these specifications
is determined by specific operating conditions in conjunction with board
layout, the rated package thermal impedance and other environmental
factors.
Note 3: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground unless otherwise
specified.
Note 4: Rise and fall times are measured using 10% and 90% levels. Delay
times are measured using 50% levels.
Note 5: The data format in PMBus is 5 bits exponent (signed) and 11 bits
mantissa (signed). This limits the output resolution to 10 bits though the
internal ADC is 16 bits and the calculations use 32-bit words.
Note 6: The data conversion is done in round robin fashion. All inputs
signals are continuously converted for a typical latency of 120ms.
Note 7: The IOUT_CAL_GAIN = 1.0mΩ and MFR_IOUT_CAL_GAIN_TC =
0.0. Value as read from READ_IOUT in amperes.
Note 8: Part tested with PWM disabled. Evaluation in application
demonstrates capability. TUE (%) = ADC Gain Error (%) + 100 [Zero
Code Offset + ADC Linearity Error]/Actual Value.
Note 9: All VOUT commands assume the ADC is used to auto-zero the
output to achieve the stated accuracy. LTC3880 is tested in a feedback loop
that servos VOUT to a specified value.
Note 10: The maximum VOUT voltage is 5.5V.
Note 11: The maximum VIN voltage is 28V.
Note 12: When VIN < 6V, INTVCC must be tied to VIN.
Note 13: EEPROM endurance and retention are guaranteed by design,
characterization and correlation with statistical process controls. The
minimum retention specification applies for devices whose EEPROM
has been cycled less than the minimum endurance specification. The
RESTORE_USER_ALL command (NVM read) is valid over the entire
operating junction temperature range.
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| LTC3880IUJ#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 40-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:PolyPhase® 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 |
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| LTC3880IUJ-1#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 40-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:PolyPhase® 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 |
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