參數(shù)資料
型號： MAX1855
廠商： Maxim Integrated Products, Inc.
元件分類： 數(shù)字信號處理
英文描述： Fixed-Point Digital Signal Processor 352-FC/CSP 0 to 0
中文描述： 高速、數(shù)字可調(diào)、同步降壓型控制器，集成電壓定位電路
文件頁數(shù)： 2/33頁
文件大?。?/td> 840K
代理商： MAX1855
M
High-Speed, Adjustable, Synchronous Step-Down
Controllers with Integrated Voltage Positioning
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
V+ to GND..............................................................-0.3V to +30V
V
CC
, V
DD
to GND .....................................................-0.3V to +6V
PGND to GND.....................................................................±0.3V
SHDN
, VGATE to GND.............................................-0.3V to +6V
ILIM, FB, CC, REF, D0
–
D4, VPS,
TON to GND...........................................-0.3V to (V
CC
+ 0.3V)
SKIP
to GND (Note 1).................................-0.3V to (V
CC
+ 0.3V)
DL to PGND................................................-0.3V to (V
DD
+ 0.3V)
BST to GND............................................................-0.3V to +36V
DH to LX....................................................-0.3V to (V
BST
+ 0.3V)
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V+ = +15V, V
CC
= V
DD
= 5V,
SKIP
= V
CC
, VPS = PGND,
T
A
= 0°C to +85°C
, unless otherwise noted. Typical
values are at T
A
= +25
°
C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1:
SKIP
may be forced below -0.3V, temporarily exceeding the absolute maximum rating, for the purpose of debugging proto-
type breadboards, using the no-fault test mode. Limit the current drawn to -2mA (max).
LX to BST..................................................................-6V to +0.3V
CS to GND.................................................................-2V to +30V
REF Short Circuit to GND...........................................Continuous
Continuous Power Dissipation (T
A
= +70
°
C)
24-Pin QSOP (derate 9.5mW/
°
C above +70
°
C)...........762mW
Operating Temperature Range ...........................-40
°
C to +85
°
C
Junction Temperature......................................................+150
°
C
Storage Temperature Range.............................-65
°
C to +150
°
C
Lead Temperature (soldering, 10s).................................+300
°
C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
PWM CONTROLLER
Battery voltage, V+
V
CC
, V
DD
2
28
5.5
Input Voltage Range
4.5
V
DAC codes from
1.35V to 2.0V
-1
1
DAC codes from
0.925V to 1.3V
-1.2
1.2
DC Output Voltage Accuracy
(Notes 2, 3)
V+ = 4.5V to 28V,
VPS = PGND
DAC codes from
0.6V to 0.9V
-1.5
1.5
%
FB Input Bias Current
VPS Input Bias Current
VPS Gain
CS Input Bias Current
ILIM Input Leakage Current
Soft-Start Ramp Time
I
FB
I
VPS
A
VPS
I
CS
I
ILIM
FB = 0.6V to 2.0V
V
VPS
=
±
40mV
V
VPS
= 0 or -40mV, gain from VPS to FB
0 to 28V
V
ILIM
= 0 or 5.0V
0 to full ILIM
-0.2
-1
0.153
-1
0.2
1
0.197
1
100
μ
A
μ
A
%/mV
μ
A
nA
ms
0.175
0.01
1.7
255
327
470
678
400
TON = GND
TON = REF
TON = open
TON = V
CC
205
280
425
615
300
375
520
740
500
On-Time (Note 4)
t
ON
V+ = 11.0V,
V
FB
= 1.5V
ns
Minimum Off-Time (Note 4)
t
OFF( M N)
ns
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1855EEG 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 安裝風格: 封裝 / 箱體:CPAK
MAX1855EEG+ 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX1855EEG-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 安裝風格: 封裝 / 箱體:CPAK
MAX1855EVKIT 功能描述:DC/DC 開關(guān)控制器 Evaluation Kit for the MAX1716 MAX1854 MAX1855 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 安裝風格: 封裝 / 箱體:CPAK
MAX1856EUB 功能描述:電信線路管理 IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
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