- 您现在的位置：买卖IC网 > PDF目录1848 > MAX8620YETD+T (Maxim Integrated Products)IC UPMIC FOR MPU 14-TDFN PDF资料下载
参数资料
| 型号： | MAX8620YETD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/18页 |
| 文件大小： | 0K |
| 描述： | IC UPMIC FOR MPU 14-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 微型电源管理集成电路（UPMIC），DSP |
| 输入电压： | 2.7 V ~ 5.5 V |
| 输出数： | 3 |
| 输出电压： | 0.6 V ~ 3.3 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-WFDFN 裸露焊盘 |
| 供应商设备封装： | 14-TDFN-EP（3x3） |
| 包装： | 带卷 (TR) |
μPMIC for Microprocessors or DSPs
in Portable Equipment
Detailed Description
The MAX8620Y μPMIC is designed to power low-core-
voltage microprocessors or DSPs in portable devices.
The μPMIC contains a fixed-frequency, high-efficiency
step-down converter; two low-dropout regulators
(LDOs); a 30ms (min) reset timer; and power-on/off
control logic (Figure 1).
Step-Down DC-DC Control Scheme
The MAX8620Y step-down converter is optimized for
high-efficiency voltage conversion over a wide load
range while maintaining excellent transient response,
minimizing external component size, and minimizing
output voltage ripple. The DC-DC converter (OUT3)
also features an optimized on-resistance internal
MOSFET switch and synchronous rectifier to maximize
efficiency. The MAX8620Y utilizes a proprietary hys-
teretic-PWM control scheme that switches with nearly
fixed frequency up to 4MHz, allowing for ultra-small
external components. The step-down converter output
current is guaranteed up to 500mA.
When the step-down converter output voltage falls
below the regulation threshold, the error comparator
begins a switching cycle by turning the high-side pFET
switch on. This switch remains on until the minimum on-
time (t ON ) expires and the output voltage is in regula-
tion or the current-limit threshold (I LIM3P ) is exceeded.
Once off, the high-side switch remains off until the mini-
mum off-time (t OFF ) expires and the output voltage
again falls below the regulation threshold. During this
off period, the low-side synchronous rectifier turns on
and remains on until either the high-side switch turns
on or the inductor current reduces to the rectifier-off
current threshold (I LXOFF = 30mA (typ)). The internal
synchronous rectifier eliminates the need for an exter-
nal Schottky diode.
V IN
IN1
pFET
IN2
C IN
MAX8620Y
STEP-DOWN
CONVERTER
CONTROL
nFET
LX
L
OUT3
R1
C FF
C OUT3
PWR_ON
CONTROL
LOGIC
ENABLE
UVLO
0.6V
FB
OUT1
R2
OUT1
HF_PWR
ONE-
SHOT
LDO1
CONTROL
C OUT1
R PU
TIMER
SEL1
OUTPUT-
RESET
RESET
RESET
SEL2
VOLTAGE
SELECT
LDO2
OUT2
OUT2
C BP
BP
IN1
REFERENCE
CONTROL
EN2
C OUT2
EN2
Figure 1. Functional Diagram
GND
GND
8
_______________________________________________________________________________________
相关PDF资料 |
PDF描述 |
|---|---|
| MAX8621YETG+T | IC PMIC W/DC-DC SUP 24-TQFN |
| MAX8625AETD+T | IC REG BUCK BST SYNC 0.8A 14TDFN |
| MAX8627ETD+T | IC REG BOOST SYNC ADJ 1A 14TDFN |
| MAX8632ETI+T | IC PWR SUPPLY DDR 28-TQFN |
| MAX8636ETA+T | IC REG LDO ADJ .3A 8TDFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8620YEVKIT | 功能描述:PMIC 解决方案 MAX8620Y Evaluation Kit RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX8621ETG | 功能描述:PMIC 解决方案 Dual Step-Down PMIC for Portable Devices RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX8621ETG+ | 功能描述:PMIC 解决方案 Dual Step-Down PMIC for Portable Devices RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX8621ETG+T | 功能描述:PMIC 解决方案 Dual Step-Down PMIC for Portable Devices RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MAX8621ETG-T | 功能描述:PMIC 解决方案 Dual Step-Down PMIC for Portable Devices RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。