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| 型号： | MAX17020ETJ+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/34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) |
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Dual Quick-PWM Step-Down Controller
with Low-Power LDO, RTC Regulator
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V IN = 12V, V DD = V CC = 5V, TON = REF, T A = +25°C, unless otherwise noted.)
POWER REMOVAL
6.5A
3.3V SMPS LOAD TRANSIENT
MAX17020 toc21
7V
(SMPS UVLO RESPONSE)
MAX17020 toc22
0.5A
3.3V
0A
40 μ s/div
A
B
C
5V
5V
5V
10ms/div
A
B
C
D
A. LOAD CURRENT, 5A/div
B. 3.3V SMPS OUTPUT, 100mV/div
C. INDUCTOR CURRENT, 5A/div
A. INPUT VOLTAGE, 5V/div
B. 5V LDO OUTPUT, 2V/div
C. 5V SMPS, 2V/div
D. PGOOD1, 5V/div
Pin Description
PIN
1
2
NAME
REF
TON
FUNCTION
2V Reference-Voltage Output. Bypass REF to AGND with a 0.1μF or greater ceramic capacitor. The
reference can source up to 50μA for external loads. Loading REF degrades output-voltage accuracy
according to the REF load-regulation error. The reference shuts down when ON1, ON2, and ONLDO are all
pulled low.
Switching-Frequency Setting Input. Select the OUT1/OUT2 switching frequencies by connecting TON as
follows for:
High (V CC ) = 200kHz/300kHz
Open (REF) = 400kHz/300kHz
GND = 400kHz/500kHz
3
V CC
Analog Supply Voltage Input. Connect V CC to the system supply voltage with a series 50
bypass to analog ground using a 1μF or greater ceramic capacitor.
resistor, and
4
5
6
7
ONLDO
RTC
IN
LDO
Enable Input for LDO. Drive ONLDO high to enable the linear regulator (LDO) output. Drive ONLDO low to
shut down the linear regulator output.
3.3V Always-On Linear Regulator Output for RTC Power. Bypass RTC with a 1μF or greater ceramic
capacitor to analog ground. RTC can source at least 5mA for external load support. RTC power-up is
required for controller operation.
Power-Input Supply. IN powers the linear regulators (RTC and LDO) and senses the input voltage for the
Quick-PWM on-time one-shot timers. The high-side MOSFET ’s on-time is inversely proportional to the input
voltage. Bypass IN with a 0.1μF or greater ceramic capacitor to PGND close to the MAX17020.
Linear Regulator Output. Bypass LDO with a 4.7μF or greater ceramic capacitor. LDO can source at least
100mA for external load support. LDO is powered from IN and its regulation threshold is set by LDOREFIN.
For preset 5V operation, connect LDOREFIN directly to GND. For preset 3.3V operation, connect LDOREFIN
directly to V CC . When LDO is used for 5V operation, LDO must supply V CC and V DD .
______________________________________________________________________________________
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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 |
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