参数资料
型号: LTC3733CUHF-1#TRPBF
厂商: Linear Technology
文件页数: 4/32页
文件大小: 0K
描述: IC CTRLR BUCK 3PH AMD CPU 38-QFN
标准包装: 2,500
应用: 控制器,AMD
输入电压: 4 V ~ 36 V
输出数: 1
输出电压: 0.8 V ~ 1.55 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 38-WFQFN 裸露焊盘
供应商设备封装: 38-QFN(5x7)
包装: 带卷 (TR)
LTC3733/LTC3733-1
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. V CC = V RUN = V SS = 5V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Oscillator and Phase-Locked Loop
f NOM
f LOW
f HIGH
R PLLTH
R PLL IN
I PLL LPF
Nominal Frequency
Lowest Frequency
Highest Frequency
PLLIN Input Threshold
PLLIN Input Resistance
Phase Detector Output Current
Sinking Capability
Sourcing Capability
V PLLFLTR = 1.2V
V PLLFLTR = 0V
V PLLFLTR = 2.4V
LTC3733-1 Only
LTC3733-1 Only
LTC3733-1 Only
f PLLIN < f OSC
f PLLIN > f OSC
310
190
470
350
210
530
1
50
20
20
400
250
620
kHz
kHz
kHz
V
k ?
μ A
μ A
R RELPHS
Controller 2-Controller 1 Phase
Controller 3-Controller 1 Phase
120
240
Deg
Deg
No_CPU Detection
t NOCPU
No-CPU Shutdown Latency
After All VID Bits = “1”
0.5
1
μ s
Differential Amplifier
A V
Differential Gain
0.995
1.000
1.005
V/V
V OS
Input Offset Voltage
IN + = IN – = 1.2V, I OUT
= 1mA,
0.5
5
mV
Input Referred; Gain = 1
CM
Common Mode Input Voltage Range
0
5
V
CMRR
I CL
Common Mode Rejection Ratio
Output Current
0V < IN + = IN – < 5V, I
OUT = 1mA, Input Referred
50
10
70
40
dB
mA
GBP
Gain Bandwidth Product
2
MHz
SR
V O(MAX)
R IN
Slew Rate
Maximum High Output Voltage
Input Resistance
R L = 2k
I OUT = 1mA
Measured at IN + Pin
5
V CC – 1.2 V CC – 0.8
80
V/ μ s
V
k ?
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: T J is calculated from the ambient temperature T A and power
dissipation P D according to the following formula:
LTC3733CG: T J = T A + (P D × 95 ° C/W)
LTC3733CUHF-1: T J = T A + (P D × 34 ° C/W)
Note 3: The IC is tested in a feedback loop that includes the differential
amplifier in a unity-gain configuration loaded with 100 μ A to ground driving
the VID DAC into the error amplifier and servoing the resultant voltage to
the midrange point for the error amplifier (V ITH = 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 I MAX (see minimum on-time
considerations in the Applications Information Section).
Note 6: ATTEN ERR specification is in addition to the output voltage
accuracy specified at VID code 10011.
Note 7: 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 specified maximum operating junction temperature may impair
device reliability.
3733f
4
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