- 您现在的位置：买卖IC网 > PDF目录16556 > MAX17020ETJ+T (Maxim Integrated Products)IC CTLR PWM DUAL STEP DN 32-TQFN PDF资料下载
参数资料
| 型号： | MAX17020ETJ+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/34页 |
| 文件大小： | 0K |
| 描述： | IC CTLR PWM DUAL STEP DN 32-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | Quick-PWM™ |
| 应用： | 电源 |
| 电流 - 电源： | 1mA |
| 电源电压： | 6 V ~ 24 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页当前第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页第33页第34页
Dual Quick-PWM Step-Down Controller
with Low-Power LDO, RTC Regulator
Pin Description (continued)
PIN
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
NAME
LDOREFIN
BYP
OUT1
FB1
ILIM1
PGOOD1
ON1
DH1
LX1
BST1
DL1
V DD
SECFB
AGND
PGND
DL2
BST2
LX2
FUNCTION
External Reference Input for the Linear Regulator. LDOREFIN sets the LDO regulation voltage (V LDO = 2 x
V LDOREFIN ) for a 0.3V to 2V LDOREFIN range. Connect LDOREFIN to GND for a fixed 5V linear-regulator
output voltage, or connect LDOREFIN to V CC for a fixed 3.3V linear-regulator output voltage. When LDO is set
to 5V and is enabled, LDO must supply V CC and V DD .
Linear Regulator Bypass Input. When BYP voltage exceeds 93.5% of the LDO voltage, the controller
bypasses the LDO output to the BYP input. The bypass switch is disabled if the LDO voltage drops by 8.5%
from its nominal regulation threshold. When not being used, connect BYP to GND.
Output Voltage-Sense Input for SMPS1. OUT1 is an input to the Quick-PWM on-time one-shot timer. OUT1 also
serves as the feedback input for the preset 5V (FB1 = GND) and 1.5V (FB1 = V CC ) output voltage settings.
Adjustable Feedback Voltage-Sense Connection for SMPS1. Connect FB1 to GND for fixed 5V operation.
Connect FB1 to V CC for fixed 1.5V operation. Connect FB1 to an external resistive voltage-divider from OUT1
to analog ground to adjust the output voltage between 0.7V and 5.5V.
Valley Current-Limit Adjustment for SMPS1. The GND - LX1 current-limit threshold is 1/10 the voltage present
on ILIM1 over a 0.2V to 2V range. An internal 5μA current source allows this voltage to be set with a single
resistor between ILIM1 and analog ground.
Open-Drain Power-Good Output for SMPS1. PGOOD1 is low when the output voltage is more than 16% (typ) below
the nominal regulation threshold, during soft-start, in shutdown, and after the fault latch has been tripped. After the
soft-start circuit has terminated, PGOOD1 becomes high impedance if the output is in regulation.
Enable Input for SMPS1. Drive ON1 high to enable SMPS1. Drive ON1 low to shut down SMPS1.
High-Side Gate-Driver Output for SMPS1. DH1 swings from LX1 to BST1.
Inductor Connection for SMPS1. Connect LX1 to the switched side of the inductor. LX1 is the lower supply rail
for the DH1 high-side gate driver.
Boost Flying-Capacitor Connection for SMPS1. Connect to an external capacitor as shown in Figure 1. An
optional resistor in series with BST1 allows the DH1 turn-on current to be adjusted.
Low-Side Gate-Driver Output for SMPS1. DL1 swings from PGND to V DD.
Supply-Voltage Input for the DL_ Gate Drivers. Connect to a 5V supply. Also connect to the drain of the BST
diode switch.
Secondary Feedback Input. The secondary feedback input forces the SMPS1 output into ultrasonic mode
when the SECFB voltage drops below its 2V threshold voltage. This forces DL1 and DH1 to switch, allowing
the system to refresh an external low-power charge pump being driven by DL1 (see Figure 1). Connect
SECFB to V CC to the 5V bias supply to disable secondary feedback.
Analog Ground. Connect the backside exposed pad to AGND.
Power Ground
Low-Side Gate-Driver Output for SMPS2. DL2 swings from PGND to V DD.
Boost Flying-Capacitor Connection for SMPS2. Connect to an external capacitor as shown in Figure 1. An
optional resistor in series with BST2 allows the DH2 turn-on current to be adjusted.
Inductor Connection for SMPS2. Connect LX2 to the switched side of the inductor. LX2 is the lower supply rail
for the DH2 high-side gate driver.
14
______________________________________________________________________________________
相关PDF资料 |
PDF描述 |
|---|---|
| EEM36DCAD | CONN EDGECARD 72POS R/A .156 SLD |
| AMM02DRAN | CONN EDGECARD 4POS .156 R/A |
| GBC19DRTS-S93 | CONN EDGECARD 38POS DIP .100 SLD |
| GCC10DRTI-S93 | CONN EDGECARD 20POS DIP .100 SLD |
| M1CXA-2040K | IDC CABLE - MKC20A/MC20F/X |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17020EVKIT+ | 制造商:Maxim Integrated Products 功能描述:SINGLE QUICK-PWM STEP-DOWN CONTROLL - Boxed Product (Development Kits) |
| MAX17021EVKIT+ | 功能描述:电源管理IC开发工具 MAX17021 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX17021GTL+ | 功能描述:电压模式 PWM 控制器 Dual-Phase, Quick-Pw M Controllers For Im RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX17021GTL+T | 功能描述:电压模式 PWM 控制器 Dual-Phase, Quick-Pw M Controllers For Im RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX17022ETA+T | 功能描述:电池管理 Fuel Guage For Portable Devices RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。