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參數(shù)資料
| 型號(hào)： | LTC3731HUH#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 5 A SWITCHING CONTROLLER, 750 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封裝： | 5 X 5 MM, LEAD FREE, PLASTIC, MO-220WHHD, QFN-32 |
| 文件頁數(shù)： | 29/34頁 |
| 文件大小： | 427K |
| 代理商： | LTC3731HUH#PBF |
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LTC3731H
3731Hfb
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 LTC3731H is guaranteed to meet specifications over the –40°C
to 140°C operating junction temperature range. Note that the maximum
ambient temperature is determined by specific operating conditions in
conjunction with board layout, the rated package thermal resistance and
other environmental factors.
Junction temperature (TJ) is calculated from the ambient temperature TA
and power dissipation PD according to the following formula:
LTC3731HG: TJ = TA + (PD 70°C/W)
LTC3731HG: TJ = TCASE + (PD 25°C/W)
LTC3731HUH: TJ = TA + (PD 34°C/W)
High junction temperatures degrade operating lifetimes. Operating lifetime
at junction temperatures greater than 125°C is derated to 1000 hours. The
LTC3731H is tested under pulsed load conditions such that TJ ≈ TA.
elecTrical characTerisTics
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power Good Output Indication
VPGL
PGOOD Voltage Output Low
IPGOOD = 2mA, G Package
IPGOOD = 1.6mA, UH Package
0.1
0.5
0.3
1
V
IPGOOD
PGOOD Output Leakage
VPGOOD = 5V
1
A
VPGTHNEG
VPGTHPOS
PGOOD Trip Thresholds
VEAIN Ramping Negative
VEAIN Ramping Positive
VEAIN with Respect to Set Output Voltage, PGOOD
Goes Low After VUVDLY Delay
–7
7
–10
10
–13
13
%
VPGDLY
Power Good Fault Report Delay
After VEAIN is Forced Outside the PGOOD Thresholds
100
150
s
Oscillator and Phase-Locked Loop
fNOM
Nominal Frequency
VPLLFLTR = 1.2V
360
400
440
kHz
fLOW
Lowest Frequency
VPLLFLTR = 0V
190
225
260
kHz
fHIGH
Highest Frequency
VPLLFLTR = 2.4V
600
680
750
kHz
VPLLTH
PLLIN Input Threshold
Minimum Pulse Width > 100ns
1
V
RPLLIN
PLLIN Input Resistance
50
kΩ
IPLLFLTR
Phase Detector Output Current
Sinking Capability
Sourcing Capability
fPLLIN < fOSC
fPLLIN > fOSC
20
A
RRELPHS
Controller 2-Controller 1 Phase
Controller 3-Controller 1 Phase
120
240
Deg
CLKOUT
Controller 1 TG to CLKOUT Phase
PHASMD = 0V
PHASMD = 5V
30
60
Deg
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = VRUN/SS = 5V unless otherwise noted.
Note 3: The IC is tested in a feedback loop that servoes the error amplifier
output voltage to its midrange point (VITH = 1.2V).
Note 4: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 5: The minimum on-time condition corresponds to an inductor
peak-to-peak ripple current of ≥40% of IMAX (see minimum on-time
considerations in the Applications Information Section).
Note 6: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions.
Overtemperature protection becomes active at a junction temperature
greater than the maximum operating temperature. Continuous operation
above the specified maximum operating junction temperature may impair
device reliability.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3731IG | 制造商:Linear Technology 功能描述:LDO Cntrlr SYNC BUCK REG 0.6V to 6V 36-Pin SSOP |
| LTC3731IG#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 36-SSOP 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 |
| LTC3731IG#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 36-SSOP 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 |
| LTC3731IUH | 制造商:Linear Technology 功能描述:LDO Cntrlr SYNC BUCK REG 0.6V to 6V 32-Pin QFN EP |
| LTC3731IUH#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 32-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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