参数资料
| 型号： | LTC3831EGN |
| 厂商： | Linear Technology |
| 文件页数： | 3/20页 |
| 文件大小： | 0K |
| 描述： | IC SW REG CONTROLLR SYNC 16-SSOP |
| 标准包装： | 100 |
| 应用： | 控制器，DDR |
| 输入电压： | 3 V ~ 8 V |
| 输出数： | 1 |
| 输出电压： | 1.27 V ~ 4 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 管件 |
| 产品目录页面： | 1336 (CN2011-ZH PDF) |
LTC3831
ELECTRICAL CHARACTERISTICS The ● denotes speci?cations that apply over the full operating temperature
range, otherwise speci?cations are at T A = 25°C. V CC , PV CC1 , PV CC2 = 5V, V R + = 2.5V, V R – = GND, unless otherwise noted. (Note 2)
SYMBOL
V COMPMAX
PARAMETER
Maximum V COMP
CONDITIONS
V FB = 0V, PV CC1 = 8V
MIN
TYP
2.85
MAX
UNITS
V
Δ f OSC / Δ I FREQSET
Frequency Adjustment
10
kHz/μA
A V
Error Ampli?er Open-Loop DC Gain
●
46
55
dB
g m
Error Ampli?er Transconductance
●
520
650
780
μmho
I COMP
Error Ampli?er Output Sink/Source
100
μA
Current
I MAX
I MAX Sink Current
V IMAX = V CC
●
9
4
12
12
15
20
μA
μA
I MAX Sink Current Tempco
V IMAX = V CC (Note 6)
3300
ppm/°C
V IH
V IL
SHDN Input High Voltage
SHDN Input Low Voltage
●
●
2.4
0.8
V
V
I IN
SHDN Input Current
V SHDN = V CC
●
0.1
1
μA
I SS
Soft-Start Current
V SS = 0V, V IMAX = 0V, V IFB = V CC
●
–8
–12
–16
μA
I SSIL
Maximum Soft-Start Sink Current
V IMAX = V CC , V IFB = 0V, V SS = V CC (Note 8),
1.6
mA
Undercurrent Limit
PV CC1 = 8V
R +
R + Input Resistance
49.5
k Ω
t r, t f
Driver Rise/Fall Time
Figure 2, PV CC1 = PV CC2 = 5V (Note 5)
●
80
250
ns
t NOV
DC MAX
Driver Nonoverlap Time
Maximum TG Duty Cycle
Figure 2, PV CC1 = PV CC2 = 5V (Note 5)
Figure 2, V FB = 0V (Note 5), PV CC1 = 8V
●
●
25
91
120
95
250
ns
%
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: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground unless otherwise
speci?ed.
Note 3: Supply current in normal operation is dominated by the current
needed to charge and discharge the external FET gates. This will vary with
the LTC3831 operating frequency, operating voltage and the external FETs
used.
Note 4: The LTC3831EGN is guaranteed to meet performance
speci?cations from 0°C to 85°C. Speci?cations over the –40°C to 85°C
operating temperature range are assured by design, characterization
Note 5: Rise and fall times are measured using 10% and 90% levels. Duty
cycle and nonoverlap times are measured using 50% levels.
Note 6: Guaranteed by design, not subject to test.
Note 7: PV CC1 must be higher than V CC by at least 2.5V for TG to operate
at 95% maximum duty cycle and for the current limit protection circuit to
be active.
Note 8: The current limiting ampli?er can sink but cannot source current.
Under normal (not current limited) operation, the output current will be
zero.
Note 9: This IC includes overtemperature protection that is intended to protect
the device during momentary overload conditions. Junction temperature
will exceed 125°C when overtemperature protection is active. Continuous
operation above the speci?ed maximum operating junction temperature may
impair device reliability.
and correlation with statistical process controls. The LTC 3831IGN is
guaranteed to meet performance speci?cations over the full –40°C to 85°C
temperature range.
3831fb
3
相关PDF资料 |
PDF描述 |
|---|---|
| LTC3832-1ES8#PBF | IC REG CTRLR BUCK PWM VM 8-SOIC |
| LTC3833EFE#PBF | IC REG CTRLR BUCK PWM CM 20TSSOP |
| LTC3834EFE#PBF | IC REG CTRLR BUCK PWM CM 20TSSOP |
| LTC3835IFE#PBF | IC REG CTRLR BUCK PWM CM 20TSSOP |
| LTC3836EUFD#TRPBF | IC REG CTRLR BUCK PWM CM 28-QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3831EGN#PBF | 功能描述:IC SW REG CONTROLLR SYNC 16-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC3831EGN#TR | 功能描述:IC SW REG CONTROLLR SYNC 16-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC3831EGN#TRPBF | 功能描述:IC SW REG CONTROLLR SYNC 16-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC3831EGN-1 | 功能描述:IC CTRLR SW REG SYNC DDR 16SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC3831EGN-1#PBF | 功能描述:IC CTRLR SW REG SYNC DDR 16SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
发布紧急采购，3分钟左右您将得到回复。