參數(shù)資料
型號(hào): BD9153MUV-E2
廠商: Rohm Semiconductor
文件頁(yè)數(shù): 6/21頁(yè)
文件大?。?/td> 630K
描述: IC REG TRPL BCK/LINEAR 24VQFN
特色產(chǎn)品: CMOS LDO Regulators
標(biāo)準(zhǔn)包裝: 1
拓?fù)洌?/td> 降壓(降壓)同步(2),線性(LDO)(1)
功能: 任何功能
輸出數(shù): 3
頻率 - 開(kāi)關(guān): 1MHz
電壓/電流 - 輸出 1: 1.8 V ~ 3.3 V,1.5A
電壓/電流 - 輸出 2: 0.8 V ~ 2.5 V,1.5A
電壓/電流 - 輸出 3: 控制器
帶 LED 驅(qū)動(dòng)器: 無(wú)
帶監(jiān)控器: 無(wú)
帶序列發(fā)生器: 無(wú)
電源電壓: 4.5 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 24-VFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝: 24-VQFN
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: BD9153MUV-E2DKR
Technical Note
 
6/18 
www.rohm.com
2009.08 - Rev.A
?2009 ROHM Co., Ltd. All rights reserved.
BD9153MUV 
?SPAN class="pst BD9153MUV-E2_2471427_7">Information on advantages 
 
Advantage 1
Offers fast transient response with current mode control system.
 
 
 
 
Fig.26
 
Advantage 2
 Offers high efficiency for all load range.
 
鸉or lighter load:
Utilizes the current mode control mode called SLLM for lighter load, which reduces various dissipation such as switching
dissipation (P
SW
), gate charge/discharge dissipation, ESR dissipation of output capacitor (P
ESR
) and on-resistance
dissipation (P
RON
) that may otherwise cause degradation in efficiency for lighter load.
 
 
 
Achieves efficiency improvement for lighter load.
鸉or heavier load:
Utilizes the synchronous rectifying mode and the low on-resistance MOS FETs incorporated as power transistor.
 
ON resistance of Highside MOS FET : 170m&(Typ.)
ON resistance of Lowside MOS FET : 130m&(Typ.)
 
 
 
Achieves efficiency improvement for heavier load.
 
Offers high efficiency for all load range with the improvements mentioned above.
 
 
 
Fig.27 Efficiency
BD9153MUV
 (Load response IO=0.5A?.5A / usec)
BD9153MUV
 (Load response IO=1.5A?.5A / usec)
0.001    0.01     0.1
1
0
50
100
`
a
PWM
SLLM
`inprovement by SLLM system
aimprovement by synchronous rectifier 
Output current Io[A]
Io1
VOUT1
Io1
VOUT1
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