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參數(shù)資料
| 型號： | MAX1717EEG |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Replaced by TMS320VC5506 : Digital Signal Processors 100-LQFP |
| 中文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封裝： | 0.150 INCH, 0.025 INCH PITCH, MO-137AC, QSOP-24 |
| 文件頁數(shù)： | 10/32頁 |
| 文件大?。?/td> | 501K |
| 代理商： | MAX1717EEG |
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M
Dynamically Adjustable, Synchronous
Step-Down Controller for Notebook CPUs
10
______________________________________________________________________________________
Pin Description
Typical Operating Characteristics (continued)
(Circuit of Figure 1, components of Table 1, V+ = +12V, V
DD
= V
CC
= SKP/
SDN
= +5V, V
OUT
= 1.6V, T
A
= +25°C, unless otherwise noted.)
B
C
100
μ
s/div
SHUTDOWN WAVEFORM
A
M
300kHz VOLTAGE POSITIONED, CIRCUIT 2,
PWM MODE, NO LOAD
A = V
, 1V/div
B = INDUCTOR CURRENT, 10A/div
C = SKP/SDN, 5V/div
B
C
100
μ
s/div
SHUTDOWN WAVEFORM
A
M
300kHz VOLTAGE POSITIONED, CIRCUIT 2,
PWM MODE, I
OUT
= 12A
A = V
OUT
, 1V/div
B = INDUCTOR CURRENT, 10A/div
C = SKP/SDN, 5V/div
Feedback Remote-Sense Input. For nonvoltage-positioned circuits, connect FBS to V
OUT
directly at the
load. FBS internally connects to the integrator that fine tunes the DC output voltage. For voltage-positioned
circuits, connect FBS directly to FB near the IC to disable the FBS remote-sense integrator amplifier. To dis-
able all three integrator amplifiers, connect FBS to V
CC
.
FBS
5
Integrator Capacitor Connection. Connect a 100pF to 1000pF (470pF typ) capacitor from CC to GND to set
the integration time constant. CC can be left open if FBS is tied to V
CC
.
CC
6
Analog Supply Voltage Input for PWM Core. Connect V
CC
to the system supply voltage (4.5V to 5.5V) with a
series 20
resistor. Bypass to GND with a 0.22μF (min) capacitor.
V
CC
7
Fast Feedback Input. Connect FB to the junction of the external inductor and output capacitor for nonvolt-
age-positioned circuits (Figure 1). For voltage-positioned circuits, connect FB to the junction of the external
inductor and the positioning resistor (Figure 3).
FB
4
Slew-Rate Adjustment Pin. Connect a resistor from TIME to GND to set the internal slew-rate clock. A 470k
to 47k
resistor sets the clock from 38kHz to 380kHz,
SLEW
= 150kHz
·
120k
/ R
TIME
.
TIME
3
PIN
Combined Shutdown and Skip-Mode Control. Drive SKP/
SDN
to GND for shutdown. Leave SKP/
SDN
open for
low-noise forced-PWM mode, or drive to V
CC
for normal pulse-skipping operation. Low-noise forced-PWM mode
causes inductor current recirculation at light loads and suppresses pulse-skipping operation. SKP/
SDN
can also
be used to disable over/undervoltage protection circuits and clear the fault latch by forcing it to 12V < SKP/
SDN
< 15V (with otherwise normal PFM/PWM operation). Do not connect SKP/
SDN
to > 15V.
SKP/
SDN
2
Battery Voltage Sense Connection. Connect V+ to input power source. V+ is used only for PWM one-shot
timing. DH on-time is inversely proportional to input voltage over a range of 2V to 28V.
V+
1
FUNCTION
NAME
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| MAX1720EUTG | Switched Capacitor Voltage Inverter with Shutdown |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1717EEG+ | 功能描述:DC/DC 開關(guān)控制器 Adj Synchronous Step-Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| MAX1717EEG+C71058 | 功能描述:DC/DC 開關(guān)控制器 Step-Down Controller for Notebook CPU RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| MAX1717EEG+T | 功能描述:DC/DC 開關(guān)控制器 Adj Synchronous Step-Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| MAX1717EEG-C71058 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1717EEG-T | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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