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CS5156GD16 参数 Datasheet PDF下载

CS5156GD16图片预览
型号: CS5156GD16
PDF下载: 下载PDF文件 查看货源
内容描述: CPU 5位非同步降压控制器 [CPU 5-Bit Nonsynchronous Buck Controller]
分类和应用: 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
文件页数/大小: 14 页 / 310 K
品牌: CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
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0°C < TA < +70°C; 0°C < TJ < +85°C; 8V < VCC1 < 14V; 5V < VCC2 < 14V; DAC Code: VID4 = VID2 = VID1  
Electrical Characteristics:  
= VID0 = 1; VID3 = 0; CVGATE = 1nF; COFF = 330pF; CSS = 0.1µF, unless otherwise specified.  
PARAMETER  
Supply Current  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
ICC1  
ICC2  
Operating ICC1  
Operating ICC2  
No Switching  
No Switching  
VFB = COMP = VFFB  
VFB = COMP = VFFB  
8.5  
1.6  
8
13.5  
3.0  
13  
mA  
mA  
mA  
mA  
2
5
COFF  
Normal Charge Time  
Extension Charge Time  
Discharge Current  
VFFB = 1.5V; VSS = 5V  
VSS = VFFB = 0  
COFF to 5V; VFB >1V  
1.0  
5.0  
5.0  
1.6  
8.0  
2.2  
11.0  
µs  
µs  
mA  
Time Out Timer  
Time Out Time  
VFB = VCOMP; VFFB = 2V;  
Record VGATE Pulse High Duration  
VFFB = 0V  
10  
35  
30  
50  
50  
65  
µs  
%
Fault Mode Duty Cycle  
Note 1: Guaranteed by design, not 100% tested in production.  
Package Pin Description  
PACKAGE PIN #  
PIN SYMBOL  
FUNCTION  
16L SO Narrow & PDIP  
1,2,3,4,6  
V
ID0 – VID4  
Voltage ID DAC input pins. These pins are internally pulled up to 5V  
providing logic ones if left open. VID4 selects the DAC range. When VID4  
is High (logic one), the DAC range is 2.14V to 3.54V with 100mV incre-  
ments. When VID4 is Low (logic zero), the DAC range is 1.34V to 2.09V  
with 50mV increments. VID0 - VID4 select the desired DAC output volt-  
age. Leaving all 5 DAC input pins open results in a DAC output voltage  
of 1.244V, allowing for adjustable output voltage, using a traditional  
resistor divider.  
5
SS  
Soft Start Pin. A capacitor from this pin to LGnd in conjunction with  
internal 60µA current source provides soft start function for the con-  
troller. This pin disables fault detect function during Soft Start. When a  
fault is detected, the soft start capacitor is slowly discharged by internal  
2µA current source setting the time out before trying to restart the IC.  
Charge/discharge current ratio of 30 sets the duty cycle for the IC when  
the regulator output is shorted.  
7
8
COFF  
VFFB  
A capacitor from this pin to ground sets the time duration for the on  
board one shot, which is used for the constant off time architecture.  
Fast feedback connection to the PWM comparator. This pin is connected  
to the regulator output. The inner feedback loop terminates on time.  
9
VCC2  
Boosted power for the gate driver.  
10  
VGATE  
MOSFET driver pin capable of 1.5A peak switching current.  
4
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