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AIC1569A 参数 Datasheet PDF下载

AIC1569A图片预览
型号: AIC1569A
PDF下载: 下载PDF文件 查看货源
内容描述: 5位DAC ,同步PWM功率调节器 [5-bit DAC, Synchronous PWM Power Regulator]
分类和应用: 调节器
文件页数/大小: 7 页 / 240 K
品牌: AIC [ ANALOG INTERGRATIONS CORPORATION ]
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AIC1569A  
BLOCK DIAGRAM  
POWER-ON  
RESET  
VCC  
OVP  
115%  
110%  
+
OVP  
+
VSEN  
PGOOD  
OCSET  
POWER GOOD  
90%  
50%  
+
+
OVER  
+
IOCS  
CURRENT  
µ
10 A  
200µA  
SS  
PHASE  
BOOT  
4V  
UGATE  
GND  
SOFT  
START  
CONTROL  
LOGIC  
REFERENCE  
5-BITS DAC  
VDAC  
VCC  
VID0  
VID1  
VID2  
VID3  
VID4  
+
LGATE  
PGND  
+
ERROR AMP  
PWM  
COMPARATOR  
FB  
COMP  
RT  
OSCILLATOR  
PIN DESCRIPTIONS  
equation:  
PIN 1: VSEN - Converter output voltage sense  
pin. Connect this pin to the  
converter output. The PGOOD  
and OVP comparator circuits use  
this signal to report output voltage  
status and perform overvoltage  
protection function.  
IOCS × ROCSET  
IPEAK =  
RDS(ON)  
If FB pin voltage is sensed to be  
below 50% of the internal voltage  
reference VDAC, the over current  
comparator cycles the soft-start  
function.  
PIN 2:OCSET- Current limit sense pin. Connect a  
resistor ROCSET from this pin to the  
drain of the external MOSFET.  
ROCSET, an internal 200µA current  
source (IOCS), and the external  
PIN 3:SS  
- Soft start pin. Connect a capacitor  
from this pin to ground. An internal  
10µA current source provides soft  
start function for the converter.  
MOSFET on-resistance (RDS(ON)  
jointly set the over current trip  
point according to the following  
)
5