XC6121 TOREX [Torex Semiconductor], XC6121 Datasheet
XC6121
Related parts for XC6121
XC6121 Summary of contents
Page 1
... The output type is V XC6121/XC6122/XC6123/XC6124 series’ ICs, the EN/ENB pin can control ON and OFF of the watchdog functions. By setting the EN/ENB pin to low or high level, the watchdog function can be OFF while the voltage detector remains operation. Since the EN/ENB pin of the XC6122 and XC6124 series is internally pulled up to the V can be used with the EN/ENB pin left open, when the watchdog functions is used ...
Page 2
... XC6121/XC6122/XC6123/XC6124 ■PIN CONFIGURATION SOT-25 (TOP VIEW) ■PIN ASSIGNMENT PIN NUMBER SOT-25 USP- 2/23 Series (BOTTOM VIEW) * The dissipation pad for the USP-6C package should be solder-plated in recommended mount pattern and metal masking enhance mounting strength and heat release ...
Page 3
... ENB input logic: The watchdog function turns on when the ENB pin becomes low level. ●Ordering Information XC6121①②③④⑤⑥: N-channel Open Drain Output (RESETB), EN Pin: No Pull-Up Resistor XC6122①②③④⑤⑥: N-channel Open Drain Output (RESETB), EN Pin: Pull-Up Resistor XC6123① ...
Page 4
... XC6121/XC6122/XC6123/XC6124 ■BLOCK DIAGRAMS ●XC6121 Series ●XC6122 Series 4/23 Series N-ch Open Drain Output N-ch Open Drain Output ...
Page 5
... DIAGRAMS (Continued) ●XC6123 Series ●XC6124 Series XC6121/XC6122/XC6123/XC6124 N-ch Open Drain Output N-ch Open Drain Output Series 5/23 ...
Page 6
... XC6121/XC6122/XC6123/XC6124 ■ABSOLUTE MAXIMUM RATINGS PARAMETER Input Voltage Output Current Output Voltage SOT-25 Power Dissipation USP-6C Operational Temperature Range Storage Temperature Range 6/23 Series SYMBOL RATINGS V V -0 -0.3∼V +0.3≦7.0 EN/ENB -0 OUT V -0.3 ~ 7.0 RESETB SS 250 Pd 100 Topr -40 ~ +85 Tstg -55 ~ +125 ...
Page 7
... Reset output pin is released to go into the detection state. (WD Time until V increases from IN 1. x1.1V) DFL and the Reset output pin is released to go into the detection state. (WD XC6121/XC6122/XC6123/XC6124 MIN. TYP. MAX. UNITS V V DFL(T) DFL( DFL(T) × 0.98 × 1.02 ...
Page 8
... XC6121/XC6122/XC6123/XC6124 ■ELECTRICAL CHARACTERISTICS (Continued) PARAMETER SYMBOL Watchdog T WDIN Minimum Pulse Width Watchdog V WDH High Level Voltage Watchdog V WDL Low Level Voltage Watchdog R WD Pull-down Resistance EN/ENB V /V ENH ENBH High Level Voltage EN/ENB V V ENL/ ENBL Low Level Voltage EN Pull- ...
Page 9
... EXPLANATION The XC6121/6122/6123/6124 series compare, using the error amplifier, the voltage of the internal voltage reference source with the voltage divided by R1, R2 and R3 connected to the V activates the watchdog logic, delay circuit and the output driver. When the V the detect voltage, the RESETB pin output goes from high to low in the case of the V < ...
Page 10
... XC6121/XC6122/XC6123/XC6124 ■TIMING CHARTS 1. XC6121/XC6122 Series (EN products) ●N-ch Open Drain Output (Rpull=100kΩ) (N-ch Open Drain Output, Rpull=100kΩ) ●T DF 10/23 Series Hysteresis Width ...
Page 11
... CHARTS (Continued) 2. XC6123/XC6124 Series (ENB products) ●N-ch Open Drain Output (Rpull=100kΩ) (N-ch Open Drain Output, Rpull=100kΩ) ●T DF XC6121/XC6122/XC6123/XC6124 Hysteresis Width Series 11/23 ...
Page 12
... Referring to the figure below, the ignoring time (no reaction time) lasts for 900μs at maximum. 6. The EN pin of the XC6121 series is not internally pulled up. When using the watchdog function, please drive the EN pin in high level. The EN pin of the XC6122 series is internally pulled up. The watchdog function can be used even the EN pin left open ...
Page 13
... IN *4: The RESETB pin becomes indefinite operation while 0.35V<EN/ENB<1.3V. The EN pin of the XC6121 series is not internally pulled up. When using the watchdog function, please drive the *5: EN pin in high level. The EN pin of the XC6122 series is internally pulled up. The watchdog function can be used even the EN pin left open ...
Page 14
... XC6121/XC6122/XC6123/XC6124 ■TEST CIRCUITS Circuit ① Circuit ② Circuit ③ 14/23 Series VDS=0.5V ...
Page 15
... CIRCUITS (Continued) Circuit ④ Circuit ⑤ Circuit ⑥ XC6121/XC6122/XC6123/XC6124 Series 15/23 ...
Page 16
... XC6121/XC6122/XC6123/XC6124 ■TEST CIRCUITS (Continued) Circuit ⑦ Circuit ⑧ Circuit ⑨ 16/23 Series Note: The above reference is about the EN logic operation. Note: XC6122 series has EN pin, XC6124 Series has ENB pin. ...
Page 17
... Ta=85℃ Ta=-40℃ (V) IN =1.6V) DF 2.90 2.80 2.70 2. 100 XC6121/XC6122/XC6123/XC6124 XC6121~XC6124(V =2.7V) DF Ta=85℃ Ta=25℃ Ta=-40℃ Input Voltage: V (V) IN XC6121~XC6124(V =2 ...
Page 18
... XC6121/XC6122/XC6123/XC6124 ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (2.)Detect, Release Voltage vs. Ambient Temperature (Continued) XC6121~XC6124(V 5. 5.20 5.10 5. 4.90 -50 - Ambient Temperature: Ta (℃) (3.)Nch Driver Output Current vs. V XC6121~XC6124 ...
Page 19
... IN 2.0 V =3.0V IN 1.0 V =1.76V IN 0.0 75 100 -50 XC6121/XC6122/XC6123/XC6124 XC6121~XC6124 T =1600ms Ambient Temperature: Ta (℃) XC6121~XC6124 Ta=25℃ ...
Page 20
... XC6121/XC6122/XC6123/XC6124 ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (11.)Watchdog Pull-Down Resistance vs. Ambient Temperature XC6121~XC6124 1100 1000 900 800 700 600 500 400 300 -50 - Ambient Temperature: Ta (℃) (12.)EN Pull-Up Resistance vs. Ambient Temperature X ...
Page 21
... Ambient Temperature: Ta (℃) (17.)ENB High Level Voltage vs. Ambient Temperature 1.10 1.00 0.90 0.80 V =6.0V IN 0.70 V =3.0V IN 0.60 V =1.76V IN 0. 100 XC6121/XC6122/XC6123/XC6124 XC6123~XC6124 V =6. =3. =1.76V IN -50 - Ambient Temperature: Ta (℃) Series 100 21/23 ...
Page 22
... XC6121/XC6122/XC6123/XC6124 ■ PACKAGING INFORMATION ●SOT-25 ●USP-6C Recommended Pattern Layout 22/23 Series ●USP-6C ●USP-6C Recommended Metal Mask Design ...
Page 23
... Should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives assume no responsibility for damage or loss due to abnormal use. 7. All rights reserved. No part of this catalog may be copied or reproduced without the prior permission of Torex Semiconductor Ltd. XC6121/XC6122/XC6123/XC6124 Series 23/23 ...