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参数资料
| 型号： | MAX8620YETD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/18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
Voltage-Positioning Load Regulation
As seen in Figure 2, the MAX8620Y uses a unique step-
down converter feedback network. By taking feedback
from the LX node through R1, the usual phase lag due
to the output capacitor is removed, making the loop
exceedingly stable and allowing the use of a very small
ceramic output capacitor. This configuration causes the
output voltage to shift by the inductor series resistance
multiplied by the load current. This output-voltage shift
is known as voltage-positioning load regulation.
Voltage-positioning load regulation greatly reduces
compares the reference voltage to a feedback voltage
and amplifies the difference. If the feedback voltage is
lower than the reference voltage, the pass-transistor
gate is pulled lower, allowing more current to pass to
the outputs and increasing the output voltage. If the
feedback voltage is too high, the pass-transistor gate is
pulled up, allowing less current to pass to the output.
Table 1. MAX8620Y Output-Voltage
Selection
overshoot during load transients, which effectively
halves the peak-to-peak output-voltage excursions
compared to traditional step-down converters. See the
Load-Transient Response graph in the Typical
Operating Characteristics section.
Two low-dropout, low-quiescent-current, high-accuracy
linear regulators supply loads up to 300mA each. The
LDO output voltages are set using SEL1 and SEL2 (see
Table 1). As shown in Figure 3, the LDOs include an
internal reference, error amplifiers, p-channel pass tran-
sistors, internal-programmable voltage-dividers, and an
OUT1 power-good comparator. Each error amplifier
SEL1
IN1
IN1
IN1
OPEN
OPEN
OPEN
GND
GND
GND
SEL2
IN1
OPEN
GND
IN1
OPEN
GND
IN1
OPEN
GND
OUT1
3.00V
2.85V
3.00V
3.30V
2.80V
3.30V
2.85V
2.60V
1.80V
OUT2
2.50V
2.85V
3.00V
2.50V
2.60V
1.80V
2.60V
2.60V
2.60V
2.6V
IN2
OUT1
C OUT1
4.7 μ F
100k ?
300mA
I/O
Li+
CELL
C IN
10 μ F
C BP
0.01 μ F
IN1
BP
MAX8620Y
RESET
LX
FB
R1
150k ?
L
2.2 μ H
C FF
150pF
OUT3,
500mA
C OUT3
2.2 μ F
RESET IN
CORE
DSP
SEL2
SEL1
R2
75k ?
2.6V
OR
μ P
V BATT
POWER-ON
KEY
1M ?
HF_PWR
GND
OUT2
EN2
PWR_ON
C OUT2
4.7 μ F
300mA
ANALOG
ON/OFF
Figure 2. Typical MAX8620Y DSP or μP Application
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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 |
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