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参数资料
| 型号： | MAX1710EEG |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | High-Speed, Digitally Adjusted Step-Down Controllers for Notebook CPUs |
| 中文描述： | SWITCHING CONTROLLER, 550 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封装： | 0.150 INCH, 0.025 INCH PITCH, QSOP-24 |
| 文件页数： | 9/28页 |
| 文件大小： | 299K |
| 代理商： | MAX1710EEG |
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M
High-S peed, Digitally Adjusted
S tep-Down Controllers for Notebook CPUs
_______________________________________________________________________________________
9
Standard Application Circuit
The standard application circuit (Figure 1) generates a
low-voltage, high-power rail for supplying up to 7A to the
core CPU V
CC
in a notebook computer. This DC-DC
converter steps down a battery or AC adapter voltage to
sub-2V levels with high efficiency and accuracy, and
represents a good compromise between size, efficiency,
and cost.
See the MAX1710 EV kit manual for a list of components
and suppliers.
Detailed Description
The MAX1710/MAX1711 buck controllers are targeted
for low-voltage, high-current CPU power supplies for
notebook computers. CPU cores typically exhibit 0 to
10A or greater load steps when the clock is throttled.
The proprietary QUICK-PWM pulse-width modulator in
the MAX1710/MAX1711 is specifically designed for han-
dling these fast load steps while maintaining a relatively
constant operating frequency and inductor operating
point over a wide range of input voltages. The QUICK-
PWM architecture circumvents the poor load-transient
timing problems of fixed-frequency current-mode PWMs
Pin Desc ription (c ontinued)
NAME
FUNCTION
16
(MAX1711)
D4
DAC Code Input, MSB, 5μA internal pull-up to V
CC
(Tables 1 and 2).
PIN
13
DL
Low-Side Gate-Driver Output, swings 0 to V
DD
.
Power Ground. Also used as the inverting input for the current-limit comparator.
12
PGOOD
Open-Drain Power-Good Output.
11
GNDS
Ground Remote-Sense Input, normally connected to ground directly at the load. GNDS internally con-
nects to the integrator that fine-tunes the ground offset voltage.
10
GND
Analog Ground
14
PGND
15
V
DD
Supply Voltage Input for the DL gate driver, 4.5V to 5.5V
17
D3
DAC Code Input. 5μA internal pull-up to V
CC
.
DAC Code Input. 5μA internal pull-up.
16
(MAX1710)
OVP
Overvoltage-Protection Disable Control Input (Table 3). GND = normal operation and overvoltage
protection active, V
CC
= overvoltage protection disabled.
22
BST
Boost Flying-Capacitor Connection. An optional resistor in series with BST allows the DH pull-up
current to be adjusted (Figure 5). This technique of slowing the LX rise time can be used to prevent
accidental turn-on of the low-side MOSFET due to excessive gate-drain capacitance.
21
SKIP
Low-Noise-Mode Selection Control Input. Low-noise forced-PWM mode causes inductor current
recirculation at light loads and suppresses pulse-skipping operation. Normal operation prevents
current recirculation.
SKIP
can also be used to disable both overvoltage and undervoltage protection
circuits and clear the fault latch (Figure 6). GND = normal operation, V
CC
= low-noise mode.
Do not
leave
SKIP
floating
.
20
D0
DAC Code Input LSB. 5μA internal pull-up.
19
D1
DAC Code Input. 5μA internal pull-up.
18
D2
24
DH
High-Side Gate-Driver Output. Swings LX to BST.
23
LX
Inductor Connection. LX serves as the lower supply rail for the DH high-side gate driver. Also used
for the noninverting input to the current-limit comparator as well as the skip-mode zero-crossing com-
parator.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1710EEG.TG068 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1710EEG.TG074 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1710EEG+ | 制造商:Maxim Integrated Products 功能描述:LDO CNTRLR STDN 1.25V TO 2V 24QSOP - Rail/Tube |
| MAX1710EEG+T | 制造商:Maxim Integrated Products 功能描述:LDO CNTRLR STDN 1.25V TO 2V 24QSOP - Tape and Reel |
| MAX1710EEG-T | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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