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参数资料
| 型号： | MAX15020ATP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/18页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 2A 20TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 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： | 0.5 V ~ 36 V |
| 输入电压： | 7.5 V ~ 40 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 300kHz ~ 500kHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 20-TQFN-EP（5x5） |
2A, 40V Step-Down DC-DC Converter with
Dynamic Output-Voltage Programming
V IN
7.5V TO 40V
C3
0.1 μ F
C1
560 μ F
R1
97.5k Ω
D2
C4
ON/OFF
IN
BST
1 μ F
L1
22 μ H
V OUT
R2
DVREG
LX
4.02k Ω
C10
1 μ F
R5
10 Ω
MAX15020
D1
R6
10k Ω
R7
10k Ω
PWM
INPUT
R3
10k Ω
C9
0.1 μ F
C2
1 μ F
REG
REFIN
SS
FB
COMP
REFOUT SYNC GND FSEL PGND EP
C13
330pF
C11
0.027 μ F
C7
0.1 μ F
R8
340 Ω
C6
560 μ F
0 Ω
C8
0.22 μ F
C5
0.1 μ F
C12
0.1 μ F
R9
15.8k Ω
Figure 2. Typical Application Circuit
Detailed Description
The MAX15020 voltage-mode step-down converter
contains an internal 0.2 Ω power MOSFET switch. The
MAX15020 input voltage range is 7.5V to 40V. The
internal low R DS(ON) switch allows for up to 2A of out-
put current. The external compensation, voltage feed-
forward, and automatically adjustable maximum ramp
amplitude simplify the loop compensation design allow-
ing for a variety of L and C filter components. In shut-
down, the supply current is typically 6μA. The output
voltage is dynamically adjustable from 0.5V to 36V.
Additional features include an externally programmable
UVLO through the ON/ OFF pin, a programmable soft-
start, cycle-by-cycle current limit, hiccup-mode output
short-circuit protection, and thermal shutdown.
Internal Linear Regulator (REG)
REG is the output terminal of the 8V LDO powered from
IN and provides power to the IC. Connect REG exter-
nally to DVREG to provide power for the internal digital
circuitry. Place a 1μF ceramic bypass capacitor, C2,
next to the IC from REG to GND. During normal opera-
tion, REG is intended for powering up only the internal
circuitry and should not be used to supply power to the
external loads.
UVLO/ON/ OFF Threshold
The MAX15020 provides a fixed 7V UVLO function
which monitors the input voltage (V IN ). The device is
held off until V IN rises above the UVLO threshold.
ON/ OFF provides additional turn-on/turn-off control.
Program the ON/ OFF threshold by connecting a resis-
tive divider from IN to ON/ OFF to GND. The device
turns on when V ON/ OFF rises above the ON/ OFF thresh-
old (1.225V), given that V IN has risen above the UVLO
threshold.
Driving ON/ OFF to ground places the IC in shutdown.
When in shutdown the internal power MOSFET turns
off, all internal circuitry shuts down, and the quiescent
supply current reduces to 6μA (typ.). Connect an RC
network from ON/ OFF to GND to set a turn-on delay
that can be used to sequence the output voltages of
multiple devices.
10
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相关代理商/技术参数 |
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| MAX15020EVKIT+ | 功能描述:电源管理IC开发工具 MAX15020 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 |
| MAX15021ATB+ | 功能描述:直流/直流开关调节器 DUAL 4A/2A RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX15021ATI/V+ | 制造商:Maxim Integrated Products 功能描述:DUAL, 4A/2A, 4MHZ, STEP-DOWN DC-DCREGULATOR WITH TRACKING/SE - Rail/Tube |
| MAX15021ATI/V+T | 制造商:Maxim Integrated Products 功能描述:DUAL, 4A/2A, 4MHZ, STEP-DOWN DC-DCREGULATOR WITH TRACKING/SE - Tape and Reel |
| MAX15021ATI+ | 功能描述:直流/直流开关调节器 Dual 4A/2A 4MHz w/Tracking/Seq RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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