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參數資料
| 型號： | MAX1816 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 數字信號處理 |
| 英文描述： | Replaced by TMS320VC5506 : Digital Signal Processors 144-LQFP |
| 中文描述： | 雙路、降壓型控制器及線性穩壓控制器，用于筆記本電腦 |
| 文件頁數： | 1/49頁 |
| 文件大?。?/td> | 983K |
| 代理商： | MAX1816 |
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General Description
The MAX1816/MAX1994 are dual step-down controllers
for notebook computer applications. BUCK1 is a CPU
core regulator with dynamically adjustable output, ultra-
fast transient response, high DC accuracy, and high effi-
ciency. BUCK2 is an adjustable step-down regulator for
I/O and memory supplies. Both regulators employ Maxim’s
proprietary Quick-PWM control architecture. This fast-
response, constant-on-time PWM control scheme handles
wide input/output voltage ratios with ease and provides
100ns “instant” on-response to load transients, while main-
taining a relatively constant switching frequency. The
MAX1816/MAX1994 also have a linear-regulator controller
for low-voltage auxiliary power supplies.
The CPU regulator supports “active voltage positioning”
to reduce output bulk capacitance and lower power dis-
sipation. A programmable gain amplifier allows the use
of lower value sense resistors. Four fixed-gain settings
are available (0, 1.5, 2, and 4). A differential remote-
sense amplifier is also included to more accurately con-
trol the voltage at the load. Accuracy is further
enhanced with an internal integrator.
The MAX1816/MAX1994 include a specialized digital
interface that makes them suitable for mobile CPU and
video processor applications. The power-good
(PGOOD) output for the core regulator is forced high
during VID transitions, and the LINGOOD output for the
linear regulator includes a 1ms (min) turn-on delay.
BUCK1, BUCK2, and the linear regulator feature overvolt-
age protection (OVP). The detection threshold for BUCK1
is adjusted with an external resistive voltage-divider, while
the OVP thresholds for BUCK2 and the linear regulator
are fixed. Connecting the OVPSET pin to V
CC
disables
OVP for BUCK1 and BUCK2, but not the linear regulator.
The MAX1816 features an output-voltage adjustment
range from 0.6V to 1.75V. Similarly, the MAX1994 is
adjustable from 0.925V to 2.0V, using an alternate VID
code set. While in suspend mode, the adjustment range
is 0.7V to 1.075V for both the MAX1816 and MAX1994.
Both parts are available in 48-pin thin QFN packages.
Applications
Mobile CPU Core and Video Processors
Memory I/O and VID Supplies
3- to 4-Cell Li+ Battery to CPU Core Supply
Small Notebook Computers
Features
o
Dual Quick-PWM Architecture
o
±1% V
OUT
Accuracy
o
5-Bit On-Board D/A Converter
o
+0.60V to +1.75V Output Adjust Range (MAX1816)
o
+0.70V to +2.00V Output Adjust Range (MAX1994)
o
Voltage-Positioning Gain and Offset Control
o
+2V to +28V Battery Input Range
o
Differential Remote Sense (BUCK1)
o
Linear-Regulator Controller
o
200/300/550/1000kHz Switching Frequency
o
2.2mA (typ) I
CC
Supply Current
o
20μA (max) Shutdown Supply Current
o
Independent Power-Good Outputs
(PGOOD, LINGOOD)
M
Dual Step-Down Controllers Plus Linear-
Regulator Controller for Notebook Computers
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
19-2569; Rev 0; 10/02
Ordering Information
PART
TEMP RANGE
-40
°
C to +100
°
C
-40
°
C to +100
°
C
PIN-PACKAGE
48 Thin QFN
48 Thin QFN
MAX1816
ETM
MAX1994
ETM
ILIM2
CS2
OUT2
FB2
REF
V
CC
AGND
LINBSE
LINGOOD
LINFB
TIME
OVPSET
CS1+
CS1-
FBS
GDS
GAIN
OFS0
OFS1
OFS2
SUS
DPSLP
CC
ILIM1
1
2
3
4
5
6
7
8
9
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
D
S
S
S
T
P
L
D
D
D
D
L
D
P
D
P
V
D
D
D
L
V
B
B
THIN QFN 7mm
×
7mm
MAX1816
MAX1994
S
TOP VIEW
4
4
4
4
4
4
4
4
4
3
3
3
1
1
1
1
1
1
1
2
2
2
2
2
Pin Configuration
Quick-PWM is a trademark of Maxim Integrated Products, Inc.
相關PDF資料 |
PDF描述 |
|---|---|
| MAX1816ETM | Replaced by TMS320VC5506 : Digital Signal Processors 144-LQFP |
| MAX199AEWI | Fixed-Point Digital Signal Processor 532-FCBGA |
| MAX199AMYI | Circular Connector; No. of Contacts:18; Series:MS27505; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Socket; Circular Shell Style:Box Mount Receptacle RoHS Compliant: No |
| MAX199ACAI | Multi-Range (【4V, 【2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface |
| MAX199AENI | Multi-Range (【4V, 【2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX1816ETM | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1816ETM+ | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1816ETM+T | 功能描述:DC/DC 開關控制器 NULL RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1816ETM-T | 功能描述:DC/DC 開關控制器 NULL RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1816XR31+ | 制造商:Maxim Integrated Products 功能描述: |
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