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| 型号： | MAX1587AETL+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 19/30页 |
| 文件大小： | 0K |
| 描述： | IC POWER MANAGEMENT 40-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 应用： | 手持/移动设备 |
| 电源电压： | 2.6 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-TQFN-EP（6x6） |
| 包装： | 管件 |
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High-Efficiency, Low-I Q PMICs with
Dynamic Core for PDAs and Smart Phones
V3 (VCC_CORE) Step-Down
DC-DC Converter
V3 is a 1MHz current-mode step-down converter. The
MAX1586A, MAX1586B, and MAX1587A supply loads
up to 500mA from V3 while the MAX1586C and
MAX1587C supply loads up to 1A.
The V3 output is set by the I 2 C serial interface to
between 0.7V and 1.475V in 25mV increments. The
default output voltage on power-up and after a reset is
1.3V. See the Serial Interface section for programming
details. See the Applications Information for instructions
on how to increase the V3 output voltage.
Forced PWM on REG3
Under moderate to heavy loading, the V3 always operates
in a low-noise PWM mode with constant frequency and
modulated pulse width. Switching harmonics generated by
fixed-frequency operation are consistent and easily filtered.
With light loads (< 30mA) and PWM3 low, V3 operates
in an enhanced-efficiency Idle Mode during which the
converter switches only as needed to service the load.
With PWM3 high, V3 operates in low-noise forced-PWM
mode under all load conditions.
Linear Regulators (V4, V5, and V6)
V4 (VCC_PLL)
V4 is a linear regulator that provides a fixed 1.3V output
and supplies loads up to 35mA. The power input for the
V4 and V5 linear regulators is IN45, which is typically
connected to V2. To enable V4 on the MAX1586, drive
ON4 high, or drive ON4 low for shutdown. On the
MAX1587, the enable pins for V4 and V5 are combined.
Drive ON45 high to enable V4 and V5, or drive ON45 low
for shutdown. V4 is intended to connect to VCC_PLL.
V5 (VCC_SRAM)
V5 is a linear regulator that provides a fixed 1.1V output
V4 and V5 linear regulators is IN45, which is typically
connected to V2. To enable V5 on the MAX1586, drive
ON5 high, or drive ON5 low for shutdown. On the
MAX1587, the enable pins for V4 and V5 are combined.
Drive ON45 high to enable V4 and V5, or drive ON45 low
for shutdown. V5 is intended to connect to VCC_SRAM.
V6 (VCC_USIM—MAX1586 Only)
V6 is a linear regulator on the MAX1586 that supplies
loads up to 35mA. The V6 output voltage is pro-
grammed with the I 2 C serial interface to 0V, 1.8V, 2.5V,
or 3.0V. The power-up default for V6 is 0V. See the
Serial Interface section for details on changing the volt-
age. The power input for the V6 linear regulator is IN6,
which is typically connected to V1. To enable V6, drive
ON6 high, or drive ON6 low for shutdown. V6 is intend-
ed to connect to VCC_USIM.
V7 Always-On Output (VCC_BATT)
The V7 output is always active if V1 is enabled and in
regulation or if backup power is present. When ON1 is
high and V1 is in regulation, V7 is sourced from V1 by
an internal MOSFET switch. When ON1 is low or V1 is
out of regulation, V7 is sourced from BKBT by a second
on-chip MOSFET. V7 can supply loads up to 30mA. V7
is intended to connect to VCC_BATT on Intel CPUs.
Due to variations in system implementation, BKBT and
V7 can be utilized in different ways. See the Backup-
Battery and V7 Configurations section for information on
how to use BKBT and V7.
Quiescent Operating Current
in Various States
The MAX1586/MAX1587 are designed for optimum effi-
ciency and minimum operating current for all typical
operating modes, including sleep and deep sleep.
These states are outlined in Table 1.
and supplies loads up to 35mA. The power input for the
Table 1. Quiescent Operating Current in Various States
OPERATING
POWER MODE
RUN
IDLE
SENSE
STANDBY
SLEEP
DEEP SLEEP
DESCRIPTION
All supplies on and running
All supplies on and running, peripherals on
All supplies on, minimal loading, peripherals monitored
All supplies on, minimal loading, peripherals not monitored
PWR_EN controlled voltages (V3, V4, V5) are off. V1 and V2 on.
All supplies off except V7. V7 biased from backup battery.
TYPICAL MAX1586/MAX1587
NO-LOAD OPERATING CURRENT
200μA MAX1587,
225μA MAX1586
60μA if V1 and V2 SLEEP LDOs on;
130μA if V1, V2 step-down DC-DCs enabled
5μA MAX1587 if V IN > DBI threshold;
32μA MAX1586 if V IN > DBI threshold;
4μA if V IN < DBI threshold
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1587AETL+ | 功能描述:直流/直流开关调节器 PMICs w/Dynamic Core for PDAs 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 |
| MAX1587AETL+T | 功能描述:直流/直流开关调节器 PMICs w/Dynamic Core for PDAs 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 |
| MAX1587AETL-T | 功能描述:直流/直流开关调节器 PMICs w/Dynamic Core for PDAs 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 |
| MAX1587AEVKIT | 功能描述:直流/直流开关转换器 MAX1587A Evaluation Kit/Evaluation System RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1587AEVSYS | 功能描述:直流/直流开关转换器 High-Efficiency Low-IQ PMICs with Dynamic Core for PDAs and Smartphones RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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