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参数资料
| 型号： | LTC3616EUDD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 20/28页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 6A 24QFN |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.6 V ~ 5.5 V |
| 输入电压： | 2.25 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 300kHz ~ 4MHz |
| 电流 - 输出： | 6A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 24-QFN 裸露焊盘（3x5） |
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LTC3616
APPLICATIONS INFORMATION
Output Voltage Tracking Input
If the DDR pin is not tied to SV IN , once V TRACK/SS exceeds
0.6V, the run state is entered and the MODE selection,
power good and current foldback circuits are enabled.
In the run state, the TRACK/SS pin can be used for track-
ing down/up the output voltage of another supply. If the
V TRACK/SS drops below 0.6V, the LTC3616 enters the
down tracking state and V OUT is referenced to the TRACK/
SS voltage. If the TRACK/SS pin drops below 0.2V, the
switching frequency is reduced to ensure that the mini-
mum duty cycle limit does not prevent the output from
following the TRACK/SS pin. The run state will resume if
V TRACK/SS again exceeds 0.6V and V OUT is referenced to
the internal precision reference (see Figure 8).
Through the TRACK/SS pin, the output voltage can be set
up for either coincident or ratiometric tracking, as shown
in Figure 6.
TIME
(6a) Coincident Tracking
V OUT1
V OUT2
V OUT1
V OUT2
V FB2
V FB1
LTC3616
LTC3616
To implement the coincident tracking behavior in Fig-
ure 6a, connect an extra resistive divider to the output
of the master channel and connect its midpoint to the
TRACK/SS pin for the slave channel. The ratio of this
divider should be selected to be the same as that of the
slave channel’s feedback divider (Figure 7a). In this track-
ing mode, the master channel’s output must be set higher
than slave channel’s output. To implement the ratiometric
tracking behavior in Figure 6b, different resistor divider
values must be used as specified in Figure 7b.
3616 F06
TIME
(6b) Ratiometric Tracking
Figure 6. Two Different Modes of Output Voltage Tracking
V OUT1
V OUT2
R4 R4 R3
V IN
R2 R2 R2
For coincident start-up, the voltage value at the TRACK/SS
pin for the slave channel needs to reach the final reference
value after the internal soft-start time (around 1ms). The
master start-up time needs to be adjusted with an external
capacitor and resistor to ensure this.
TRACK/SS2 TRACK/SS1
R4 ≤ R3
LTC3616 CHANNEL 2 LTC3616 CHANNEL 1
SLAVE MASTER
Figure 7a. Setup for Coincident Tracking
3616 F07a
External Reference Input (DDR Mode)
V OUT2
V OUT1
LTC3616
LTC3616
If the DDR pin is tied to SV IN (DDR mode), the run state is
entered when V TRACK/SS exceeds 0.3V and tracking down
behavior is possible if the V TRACK/SS voltage is below 0.6V.
This allows TRACK/SS to be used as an external reference
between 0.3V and 0.6V if desired. During the run state in
DDR mode, the power good window moves in relation
R1 R5 R3 R1/R2 < R5/R6
V FB2 V FB1
R2 R6 R4
TRACK/SS2 TRACK/SS1
LTC3616 CHANNEL 2 LTC3616 CHANNEL 1
SLAVE MASTER
Figure 7b. Setup for Ratiometric Tracking
V IN
3616 F07b
20
For more information www.linear.com/LTC3616
3616fb
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| LTC3616HUDD#PBF | 制造商:Linear Technology 功能描述:IC REG BUCK SYNC ADJ 6A 24QFN |
| LTC3616IUDD#PBF | 功能描述:IC REG BUCK SYNC ADJ 6A 24QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LTC3616IUDD#TRPBF | 功能描述:IC REG BUCK SYNC ADJ 6A 24QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LTC3616MPUDD#PBF | 制造商:Linear Technology 功能描述:IC REG BUCK SYNC ADJ 6A 24QFN |
| LTC3616MPUDD#TRPBF | 制造商:Linear Technology 功能描述:IC REG BUCK SYNC ADJ 6A 24QFN |
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