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參數(shù)資料
| 型號： | CBC2518T |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Dual 600mA Step-Down Converter with Synchronization |
| 中文描述： | 雙600mA降壓轉(zhuǎn)換器的同步 |
| 文件頁數(shù)： | 10/22頁 |
| 文件大?。?/td> | 719K |
| 代理商： | CBC2518T |
AAT2513
Dual 600mA Step-Down
Converter with Synchronization
10
2513.2007.04.1.1
Functional Description
The AAT2513 is a peak current mode pulse width
modulated (PWM) converter with internal compen-
sation. Each channel has independent input,
enable, feedback, and ground pins with a 1.7MHz
clock. Both converters operate in either a fixed fre-
quency (PWM) mode or a more efficient light load
(LL) mode. A phase shift pin programs the convert-
ers to operate in phase or 180° out of phase. The
converter can also be synchronized to an external
clock during PWM operation.
The input voltage range is 2.7V to 5.5V. An exter-
nal resistive divider as shown in Figure 1 programs
the output voltage up to the input voltage. The con-
verter MOSFET power stage is sized for 600mA
load capability with up to 96% efficiency. Light load
efficiency is up to 90% at a 1mA load.
Soft Start / Enable
The AAT2513 soft start control prevents output volt-
age overshoot and limits inrush current when either
the input power or the enable input is applied.
When pulled low, the enable input forces the con-
verter into a low power non-switching state with a
bias current of less than 1μA.
Low Dropout Operation
For conditions where the input voltage drops to the
output voltage level, the converter duty cycle
increases to 100%. As the converter approaches
the 100% duty cycle, the minimum off time initially
forces the high side on time to exceed the 1.7MHz
clock cycle and reduce the effective switching fre-
quency. Once the input drops below the level
where the converter can regulate the output, the
high side P-channel MOSFET is enabled continu-
ously for 100% duty cycle. At 100% duty cycle the
output voltage tracks the input voltage minus the
I*R drop of the high side P-channel MOSFET.
Functional Block Diagram
EN1
LX1
DH
DL
PGND1
VIN1
FB1
EN2
LX2
DH
DL
PGND2
Comp
Control
Logic
Control
Logic
VIN2
FB
AGND
Voltage
Reference
Voltage
Reference
Comp
Oscillator
PS
MODE/SYNC
VCC
Logic
Logic
Err.
Amp.
Err.
Amp.
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參數(shù)描述 |
|---|---|
| CBC2518T100 | 制造商:TAIYO-YUDEN 制造商全稱:Taiyo Yuden (U.S.A.), Inc 功能描述:WOUND CHIP INDUCTORS |
| CBC2518T100K | 功能描述:固定電感器 INDCTR HI CUR WND 1007 10uH 10% RoHS:否 制造商:AVX 電感:10 uH 容差:20 % 最大直流電流:1 A 最大直流電阻:0.075 Ohms 工作溫度范圍:- 40 C to + 85 C 自諧振頻率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接類型:SMD/SMT 封裝 / 箱體:6.6 mm x 4.45 mm |
| CBC2518T100KR | 制造商:TAIYO-YUDEN 制造商全稱:Taiyo Yuden (U.S.A.), Inc 功能描述:WIRE-WOUND CHIP POWER INDUCTORS (CB SERIES) |
| CBC2518T100KV | 功能描述:10μH Unshielded Wirewound Inductor 375mA 468 mOhm Max 1007 (2518 Metric) 制造商:taiyo yuden 系列:CB 包裝:剪切帶（CT） 零件狀態(tài):有效 類型:繞線 材料 - 磁芯:鐵氧體 電感:10μH 容差:±10% 額定電流:375mA 電流 - 飽和值:480mA 屏蔽:無屏蔽 DC 電阻（DCR）:468 毫歐最大 不同頻率時的 Q 值:- 頻率 - 自諧振:30MHz 等級:- 工作溫度:-40°C ~ 105°C 頻率 - 測試:2.52MHz 安裝類型:表面貼裝 封裝/外殼:1007（2518 公制） 大小/尺寸:0.098" 長 x 0.071" 寬（2.50mm x 1.80mm） 高度 - 安裝（最大值）:0.079"（2.00mm） 標(biāo)準(zhǔn)包裝:1 |
| CBC2518T100M | 功能描述:固定電感器 INDCTR HI CUR WND 1007 10uH 20% RoHS:否 制造商:AVX 電感:10 uH 容差:20 % 最大直流電流:1 A 最大直流電阻:0.075 Ohms 工作溫度范圍:- 40 C to + 85 C 自諧振頻率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接類型:SMD/SMT 封裝 / 箱體:6.6 mm x 4.45 mm |
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