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| 型号： | MAX8760ETL+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 20/39页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR QUICK PWM 40-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 系列： | Quick-PWM™ |
| 应用： | 控制器，6 位 VID AMD 移动式 Turion? |
| 输入电压： | 4 V ~ 28 V |
| 输出数： | 2 |
| 输出电压： | 0.38 V ~ 1.55 V |
| 工作温度： | 0°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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Dual-Phase, Quick-PWM Controller for AMD
Mobile Turion 64 CPU Core Power Supplies
Table 3. Operating Mode Truth Table
SHDN
SUS
SKIP
OFS
OUTPUT
VOLTAGE
OPERATING MODE
Low-Power Shutdown Mode. DL_ is forced high, DH_ is
GND
x
x
x
GND
forced low, and the PWM controller is disabled. The supply
current drops to 1μA (typ).
V CC
V CC
V CC
V CC
GND
x
GND
REF
or
High
V CC
GND
or
REF
x
x
GND or REF
GND or REF
0 to 0.8V
or
1.2V to 2V
x
D0–D5
(no offset)
D0–D5
(no offset)
D0–D5
(plus offset)
SUS, S0–S1
(no offset)
Normal Operation. The no-load output voltage is determined by
the selected VID DAC code (D0–D5, Table 4).
Pulse-Skipping Operation. When SKIP is pulled low, the
MAX8760 immediately enters pulse-skipping operation
allowing automatic PWM/PFM switchover under light loads.
The VROK upper threshold is blanked.
Deep-Sleep Mode. The no-load output voltage is determined
by the selected VID DAC code (D0–D5, Table 4) plus the
offset voltage set by OFS.
Suspend Mode. The no-load output voltage is determined by
the selected suspend code (SUS, S0, S1, Table 5),
overriding all other active modes of operation.
Fault Mode. The fault latch has been set by either UVP, OVP,
V CC
x
x
x
GND
or thermal shutdown. The controller remains in FAULT mode
until V CC power is cycled or SHDN toggled.
Four-Level Logic Inputs
TON and S0, S1 are four-level logic inputs. These inputs
help expand the functionality of the controller without
adding an excessive number of pins. The four-level
inputs are intended to be static inputs. When left open,
an internal resistive voltage-divider sets the input volt-
age to approximately 3.5V. Therefore, connect the four-
level logic inputs directly to V CC , REF, or GND when
selecting one of the other logic levels. See the Electrical
Characteristics table for exact logic level voltages.
Suspend Mode
When the processor enters low-power suspend mode, it
sets the regulator to a lower output voltage to reduce
power consumption. The MAX8760 includes independent
suspend-mode output voltage codes set by the four-level
S0, S1 inputs and the tri-level SUS input. When the CPU
suspends operation (SUS = REF or high), the controller
disables the offset amplifier and overrides the 5-bit VID
DAC code set by either D0–D5 (normal operation). The
master controller slews the output to the selected sus-
pend-mode voltage. During the transition, the MAX8760
blanks VROK and the UVP fault protection until 24 R TIME
clock cycles after the slew-rate controller reaches the
suspend-mode voltage.
SUS is a tri-level logic input: GND, REF, or high. This
expands the functionality of the controller without
adding an additional pin. This input is intended to be
driven by a dedicated open-drain output with the pullup
resistor connected either to REF (or a resistive divider
from V CC ) or to a logic-level bias supply (3.3V or
greater). When pulled up to REF, the MAX8760 selects
the upper suspend voltage range. When pulled high
(2.7V or greater), the controller selects the lower sus-
pend voltage range. See the Electrical Characteristics
table for exact logic-level voltages.
Output Voltage Transition Timing
The MAX8760 is designed to perform mode transitions in
a controlled manner, automatically minimizing input surge
currents. This feature allows the circuit designer to
achieve nearly ideal transitions, guaranteeing just-in-time
arrival at the new output voltage level with the lowest pos-
sible peak currents for a given output capacitance.
At the beginning of an output voltage transition, the
MAX8760 blanks the VROK output, preventing it from
changing states. VROK remains blanked during the
transition and is enabled 24 clock cycles after the
slew-rate controller has set the final DAC code value.
The slew-rate clock frequency (set by resistor R TIME )
must be set fast enough to ensure that the transition is
completed within the maximum allotted time.
20
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相关代理商/技术参数 |
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|---|---|
| MAX8760ETL+ | 功能描述:电流型 PWM 控制器 Dual-Phase Quick PWM Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX8760ETL+T | 功能描述:电流型 PWM 控制器 Dual-Phase Quick PWM Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX8760ETL-T | 功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX8760EVKIT | 功能描述:电流型 PWM 控制器 Evaluation Kit for the MAX8760 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX8761ETG+ | 功能描述:LCD 驱动器 Linear-Regulator LCD Panel Power Supply RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube |
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