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IXD3235A12CMR-G 参数 Datasheet PDF下载

IXD3235A12CMR-G图片预览
型号: IXD3235A12CMR-G
PDF下载: 下载PDF文件 查看货源
内容描述: [IC REG BUCK 1.2V 0.6A SYNC SOT25]
分类和应用:
文件页数/大小: 27 页 / 2144 K
品牌: ZILOG [ ZILOG, INC. ]
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Product Specification  
IXD3235/36/37  
CE “L” Current  
IENL  
tSS  
VIN = 5.0 V, VCE = 0 V, VOUT = 0 V  
IOUT = 1 mA (see table C)  
-0.1  
0.5  
0.5  
0.1  
2.5  
2.5  
µA  
ms  
IXD323xA18Cxx  
IXD323xA18Dxx  
1.0  
0.9  
Soft-Start  
Time  
VIN = VCE = 5.0 V, VOUT = 0.8 x VOUT(E), LX short with  
1 Ω resistor to ground  
VIN = VCE = 5.0 V, LX short with 1 Ω resistor to  
ground  
Latch Time7)  
tLAT  
1.0  
20.0  
ms  
V
Short Protection Threshold  
Voltage  
VSHORT  
0.675 0.900 1.150  
NOTE:  
Test conditions: Unless otherwise stated, VIN = 5.0 V, VOUT(E) = Nominal Voltage  
1) Including hysteresis operating voltage range  
2) EFFI = {(output voltage × output current) / (input voltage × input current)} × 100%  
3) ON resistance (Ω) = (VIN - Lx pin measurement voltage) / 100mA  
4) Design target value  
5) A 10μA (maximum) current may leak at high temperature  
6) The CE/MODE pin of the IXD3237A series functions also as an external switching pin between PWM and PWM/PFM control. Control  
is switched to the automatic PWM/PFM switching mode when the CE/MODE pin voltage is equal to or greater than VIN minus 0.3 V,  
and to the PWM mode when the CE/MODE pin voltage is equal to or lower than VIN minus 1.0V. However, it should be equal to or  
greater than VCEH  
7) Time from moment when VOUT is shorted to GND via 1 Ω resistor to the moment, when Current Limit generates pulse stopping LX  
oscillations  
8) When VIN is less than 2.4 V, current limit may not be reached because of voltage drop across ON resistance  
9) When the difference between input and output voltage is small, some cycles may be skipped completely before current maximizes. If  
load current increases in this state, output voltage will decrease because of the voltage drop across P-channel transistor  
10) Current limit denotes the level of an inductor peak current  
11) Voltage, when LX pin voltage is “L”=+0.1 V ~ -0.1 V  
12) Not for IXD3235 series, because they have PWM mode only  
13) The IXD3237 series only  
14) Voltage at which LX pin state changes from “L” to “H” = VIN ~ VIN - 1.2 V”  
15) Voltage at which LX pin state changes from “H” to “L” ”=+0.1 V ~ -0.1 V  
PS034201-0515  
PRELIMINARY  
3