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參數資料
| 型號： | DS232AS-N |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Line Driver or Receiver |
| 英文描述： | LINE TRANSCEIVER, PDSO16 |
| 封裝： | 0.300 INCH, SOIC-16 |
| 文件頁數： | 1/23頁 |
| 文件大小： | 409K |
| 代理商： | DS232AS-N |
MAX15026
Low-Cost, Small, 4.5V to 28V Wide Operating
Range, DC-DC Synchronous Buck Controller
EVALUATION KIT AVAILABLE
19-4108; Rev 5; 11/12
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
General Description
The MAX15026 synchronous step-down controller oper-
ates from a 4.5V to 28V input voltage range and gener-
ates an adjustable output voltage from 85% of the input
voltage down to 0.6V while supporting loads up to 25A.
The device allows monotonic startup into a prebiased
bus without discharging the output and features adap-
tive internal digital soft-start.
The MAX15026 offers the ability to adjust the switching
frequency from 200kHz to 2MHz with an external resis-
tor. The MAX15026’s adaptive synchronous rectification
eliminates the need for an external freewheeling
Schottky diode. The device also utilizes the external
low-side MOSFET’s on-resistance as a current-sense
element, eliminating the need for a current-sense resis-
tor. This protects the DC-DC components from damage
during output overloaded conditions or output short-
circuit faults without requiring a current-sense resistor.
Hiccup-mode current limit reduces power dissipation
during short-circuit conditions. The MAX15026 includes
a power-good output and an enable input with precise
turn-on/turn-off threshold, which can be used for input
supply monitoring and for power sequencing.
Additional protection features include sink-mode cur-
rent limit and thermal shutdown.
Sink-mode current limit prevents reverse inductor cur-
rent from reaching dangerous levels when the device is
sinking current from the output.
The MAX15026 is available in a space-saving and ther-
mally enhanced 3mm x 3mm, 14-pin TDFN-EP pack-
age. The MAX15026 operates over the extended -40°C
to +85°C and automotive -40°C to +125°C temperature
ranges.
The MAX15026C is designed to provide additional mar-
gin for break-before-make times.
The MAX15026B/MAX15026C provide a soft-stop
feature to ramp down the output voltage at turn-off. The
soft-stop function is disabled in the MAX15026D.
Applications
Set-Top Boxes
LCD TV Secondary Supplies
Switches/Routers
Power Modules
DSP Power Supplies
Points-of-Load Regulators
Features
o 4.5V to 28V or 5V ±10% Input Supply Range
o 0.6V to (0.85 x VIN) Adjustable Output
o Adjustable 200kHz to 2MHz Switching Frequency
o Ability to Start into a Prebiased Load
o Lossless, Cycle-by-Cycle Valley Mode Current
Limit with Adjustable, Temperature-Compensated
Threshold
o Sink-Mode Current-Limit Protection
o Adaptive Internal Digital Soft-Start
o ±1% Accurate Voltage Reference
o Internal Boost Diode
o Adaptive Synchronous Rectification Eliminates
External Freewheeling Schottky Diode
o Hiccup-Mode Short-Circuit Protection
o Thermal Shutdown
o Power-Good Output and Enable Input for Power
Sequencing
o ±5% Accurate Enable Input Threshold
o AEC-Q100 Qualified (MAX15026B)
2
4
5
*EP
13
11
10
LX
DL
DRV
VCC
EN
LIM
MAX15026
1
+
14
DH
IN
312
BST
PGOOD
69
GND
COMP
78
RT
FB
TDFN
(3mm x 3mm)
TOP VIEW
*EP = EXPOSED PAD.
Pin Configuration
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX15026BETD+
-40°C to +85°C
14 TDFN-EP*
MAX15026BETD/V+T
-40°C to +85°C
14 TDFN-EP*
MAX15026CETD+
-40°C to +85°C
14 TDFN-EP*
MAX15026BATD+
-40°C to +125°C
14 TDFN-EP*
MAX15026CATD+
-40°C to +125°C
14 TDFN-EP*
MAX15026DATD+
-40°C to +125°C
14 TDFN-EP*
+
Denotes a lead(Pb)-free/RoHS-compliant package.
*
EP = Exposed pad. T = Tape and reel.
/V denotes an automotive qualified part.
MAX15026D recommended for new designs.
相關PDF資料 |
PDF描述 |
|---|---|
| DS232AS | LINE TRANSCEIVER, PDSO16 |
| DS232A | LINE TRANSCEIVER, PDIP16 |
| DS2404S-001 | 0 TIMER(S), REAL TIME CLOCK, PDSO16 |
| DS2404B | 0 TIMER(S), REAL TIME CLOCK, PDSO16 |
| DS2404 | 0 TIMER(S), REAL TIME CLOCK, PDIP16 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DS232AS-N+ | 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數據速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| DS232AS-NTR | 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數據速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| DS232AS-NTR+ | 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數據速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| DS233 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Interface IC |
| DS233AS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Interface IC |
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