参数资料
| 型号： | ADP1621ARMZ-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 7/32页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR PWM CM 10-MSOP |
| 标准包装： | 1 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1.5MHz |
| 占空比： | 97% |
| 电源电压： | 2.9 V ~ 5.5 V |
| 降压： | 是 |
| 升压： | 是 |
| 回扫： | 是 |
| 反相： | 是 |
| 倍增器： | 是 |
| 除法器： | 是 |
| Cuk： | 是 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 标准包装 |
| 产品目录页面： | 791 (CN2011-ZH PDF) |
| 配用： | ADP1621-EVALZ-ND - BOARD EVALUATION FOR ADP1621 |
| 其它名称： | ADP1621ARMZ-R7DKR |
第1页第2页第3页第4页第5页第6页当前第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页
Data Sheet
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
ADP1621
SDSN 1
10 IN
GND 2
COMP 3
FB 4
FREQ 5
ADP1621
TOP VIEW
(Not to Scale)
9
8
7
6
CS
PIN
GATE
PGND
Figure 4. Pin Configuration
Table 4. Pin Function Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
10
Mnemonic
SDSN
GND
COMP
FB
FREQ
PGND
GATE
PIN
CS
IN
Description
Shutdown and Synchronization Input. Turn the ADP1621 on by driving SDSN high; turn it off by driving SDSN low.
If SDSN is left floating or when the SDSN is pulled low, the ADP1621 goes into shutdown after 50 μs. If synchronization is
needed, synchronize the switching frequency to an external clock by connecting the external clock to the SDSN
pin. An internal 100 k? pull-down resistor is connected from SDSN to GND.
Ground.
Regulation Control Compensation Node. COMP is the output of the internal transconductance error amplifier.
Connect a series RC from COMP to GND to compensate the regulator. The nominal voltage range for this pin is
1.0 V to 2.0 V.
Feedback Input. FB is the input to the internal transconductance error amplifier. Drive FB from the output voltage
through a resistive voltage divider. The ratio of the voltage divider sets the output voltage. The regulation voltage
at FB is nominally 1.215 V.
Frequency Control Input. Connect a resistor from FREQ to GND to set the free-running switching frequency
between 100 kHz and 1.5 MHz. The nominal voltage of this pin is 1.4 V.
Power Ground Input. PGND is the ground return for the internal gate driver and the negative input of the internal
current-sense amplifier. Connect PGND to GND as close to the ADP1621 as possible.
Gate Driver Output. The maximum gate driver output is equal to the PIN voltage. GATE drives the gate of the
external n-channel power MOSFET. Connect GATE to the gate of the MOSFET.
Power Input. PIN powers the gate driver output. An internal 5.5 V shunt regulator is connected to this pin. Bypass
PIN to PGND with a 0.1 μF or greater capacitor.
Current-Sense Input. CS is the positive input of the current-sense amplifier. When GATE is turned on, the voltage at
the CS pin increases linearly from 0 V to a maximum of 116 mV, and the nominal peak slope-compensation output
current is 70 μA. When GATE is off, the CS function is disabled. For current sensing in lossless mode, connect CS to
the drain of the power MOSFET. The absolute maximum voltage at CS is 33 V. For higher accuracy current sensing
or higher switch-node voltages, connect CS to a current-sense power resistor in the source of the power MOSFET.
In both sensing methods, it is required to add a slope-compensation resistor, R S , to the CS pin to achieve stability
in the inductor current for duty cycles greater than 50%. However, it is recommended to add R S for all duty cycles
because load transients can momentarily cause the duty cycle to be greater than 50%, even when the steady-
state duty cycle is less than 50%.
Input Voltage. IN powers the ADP1621 internal circuitry. An internal 5.5 V shunt regulator is connected to this pin.
Bypass IN to GND with a 0.1 μF or greater capacitor.
Rev. B | Page 7 of 32
相关PDF资料 |
PDF描述 |
|---|---|
| ADP1707ARDZ-1.8-R7 | IC REG LDO 1.8V 1A 8-SOIC |
| ADP170AUJZ-2.5-R7 | IC REG LDO 2.5V .3A TSOT23-5 |
| ADP1711AUJZ-3.0-R7 | IC REG LDO 3V .15A TSOT-23-5 |
| ADP1713AUJZ-0.9-R7 | IC REG LDO 0.9V .3A TSOT-23-5 |
| ADP1715ARMZ-R7 | IC REG LDO ADJ .5A 8MSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADP1621-BL2-EVZ | 制造商:Analog Devices 功能描述:BLANK ADISIMPOWER EVAL ADP1621 - Boxed Product (Development Kits) |
| ADP1621-BL4-EVZ | 功能描述:BOARD EVALUATION FOR ADP1621 RoHS:是 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:- 标准包装:1 系列:- 主要目的:DC/DC，步降 输出及类型:1，非隔离 功率 - 输出:- 输出电压:3.3V 电流 - 输出:3A 输入电压:4.5 V ~ 28 V 稳压器拓扑结构:降压 频率 - 开关:250kHz 板类型:完全填充 已供物品:板 已用 IC / 零件:L7981 其它名称:497-12113STEVAL-ISA094V1-ND |
| ADP1621-EVAL | 制造商:AD 制造商全称:Analog Devices 功能描述:Constant-Frequency, Current-Mode Step-Up DC/DC Controller |
| ADP1621-EVALZ | 功能描述:BOARD EVALUATION FOR ADP1621 RoHS:是 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:- 标准包装:1 系列:- 主要目的:DC/DC，步降 输出及类型:1，非隔离 功率 - 输出:- 输出电压:3.3V 电流 - 输出:3A 输入电压:4.5 V ~ 28 V 稳压器拓扑结构:降压 频率 - 开关:250kHz 板类型:完全填充 已供物品:板 已用 IC / 零件:L7981 其它名称:497-12113STEVAL-ISA094V1-ND |
| ADP162ACBZ-1.2-R7 | 功能描述:IC REG LDO 1.2V .15A 4WLCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 其它有关文件:LD39015JXX12 View All Specifications 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:1.2V 输入电压:1.5 V ~ 5.5 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:150mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:4-WFBGA，FCBGA 供应商设备封装:4-覆晶（1.07x1.07） 包装:Digi-Reel® 其它名称:497-11958-6 |
发布紧急采购，3分钟左右您将得到回复。