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参数资料
| 型号： | LTC3709EG#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/24页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 36-SSOP |
| 标准包装： | 37 |
| 系列： | PolyPhase® |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 200kHz |
| 占空比： | 90% |
| 电源电压： | 5 V ~ 36 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 36-SSOP（0.209"，5.30mm 宽） |
| 包装： | 管件 |
LTC3709
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. V CC = DRV CC = 5V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Phase-Lock Loop
I INTPLL_SOURCE
I INTPLL_SINK
I EXTPLL_SOURCE
I EXTPLL_SINK
Internal PLL Sourcing Current
Internal PLL Sinking Current
External PLL Sourcing Current
External PLL Sinking Current
20
– 20
20
– 20
μ A
μ A
μ A
μ A
V FCB(DC)
V FCB(AC)
t ON(PLL)1
t ON(PLL)2
Forced Continuous Threshold
Clock Input Threshold
t ON1 Modulation Range by External PLL
Up Modulation
Down Modulation
t ON2 Modulation Range by Internal PLL
Up Modulation
Down Modulation
Measured with a DC Voltage at FCB Pin
Measured with a AC Pulse at FCB Pin
I ON1 = 180 μ A, V EXTPLL = 1.8V
I ON1 = 180 μ A, V EXTPLL = 0.6V
I ON2 = 180 μ A, V INTPLL = 1.8V
I ON2 = 180 μ A, V INTPLL = 0.6V
1.9
1
186
186
2.1
1.5
233
58
233
58
2.3
2
80
80
V
V
ns
ns
ns
ns
Differential Amplifier
A V
V OS
Differential Gain
Input Offset Voltage
IN + = IN – = 1.2V, I OUT = 1mA,
Input Referred; Gain = 1
0.995
1.000
0.5
1.005
7
V/V
mV
CM
CMRR
Common Mode Input Voltage Range
Common Mode Rejection Ratio
I OUT = 1mA
0V < IN + = IN – < 5V, I OUT = 1mA,
Input Referred
0
45
70
5
V
dB
I CL
GBP
SR
Output Current
Gain Bandwidth Product
Slew Rate
I OUT = 1mA
R L = 2k
10
40
2
5
mA
MHz
V/ μ s
V O(MAX)
R IN
Maximum High Output Voltage
Input Resistance
I OUT = 1mA
Measured at IN + Pin
V CC – 1.2 V CC – 0.8
80
V
k ?
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: T J is calculated from the ambient temperature T A and power
dissipation P D as follows:
LTC3709EUH: T J = T A + (P D ? 34 ° C/W)
LTC3709EG: T J = T A + (P D ? 95 ° C/W)
Note 3: The LTC3709 is tested in a feedback loop that adjusts V FB to
achieve a specified error amplifier output voltage (I TH ).
Note 4: The LTC3709E is guaranteed to meet performance specifications
from 0 ° C to 70 ° C. Specifications over the –40 ° C to 85 ° C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 5: R DS(ON) limit is guaranteed by design and/or correlation to static
test.
3709fb
4
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