PT7M7809 Datasheet, PDF (4/12 Pages) Pericom Semiconductor Corporation – Precision supply-voltage monitor

PT7M7803/7809-7812/7823-7825
µP Supervisor Circuits
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DC Electrical Characteristics
(V_CC = V_RN + 5% to 5.5V, T_A= -40~85ºC, unless otherwise noted.)(Note 1)
Symbol
Description
Test Conditions
Min
Typ
Max
Unit
V_CC Operating Voltage Range
-
1.0
-
I_CC
Supply Current
Vcc = 5V, No 7803/09/10/11/12
-
10
load
7823/24/25
-
13
5.5
V
30
µA
36
V_IH
Input High Voltage
Pin: MR, WDI
0.7V_CC
-
-
V
V_IL
V_RST
čV_RTHĒ)
Input Low Voltage
Threshold Voltage(Falling-
edge)(Note 2)
Pin: MR, WDI
T_A= 25ºC
T_A= -40 ~ 85ºC
78xx(except
7809R/M)
7809M
7809R
7809M
-
-
0.3V_CC
V
V_RN - 1.5% V_RN V_RN + 1.5%
V_RN -1.1%
V_RN V_RN +1.1%
V_RN -1.0%
V_RN V_RN +1.0%
V
V_RN - 1.8% V_RN V_RN + 2%
T_A= -40 ~ 85ºC
78xx(except
7809M)
V_RN - 2.5% V_RN V_RN + 2.5%
V_RTHĐ
Threshold Voltage(Rising-
edge) (Note 2)
T_A= -40 ~ 85ºC
7809M
4.232
4.31
4.396
V
V_RTH
V_OH
V_OL
I_LKG
I_WDI
Reset Threshold Hysteresis
(Note 2)
Output High
Voltage(Except
7823/24/25)
Output High
Voltage(7823/24/25)
Output Low Voltage
Open-Drain Output
Leakage Current
Average WDI Input
Current (Note 3)
Vcc varies
between
V_RN ± 5%
7823/24/25L/M
7823/24/25
T/S/R/K/Z/Y
Others
Vcc ≥ 4.5V Isource=800µA
Vcc ≥ 2.7V Isource=500µA
Vcc ≥ 1.8V Isource=150µA
Vcc ≥ 1.0V Isource=4µA
7823/24/25L/M, Vcc=V_RST
Isource=120µA
7823/24/25T/S/R/K, Vcc=V_RST
Isource=30µA
Vcc ≥ 4.5V Isink=3.2mA
Vcc ≥ 2.7V Isink=1.2mA
Vcc ≥ 1.0V Isink=100µA
V_CC > V_TH(MAX) for 7803
WDI connected to V_CC: 5.5V
WDI connected to GND
-
12
-
4
-
50
Vcc-1.5
-
0.8×Vcc
-
0.8×Vcc
-
0.8×Vcc
-
Vcc-1.5
-
0.8×Vcc
-
-
-
-
-
-
-
-
-
-
120
-20
-15
-
-
mV
-
-
-
V
-
-
-
V
-
V
0.4
0.3
V
0.3
1
µA
160
µA
-
RESET Output Short-
PT7M782xL/M, RESET=0V,
-
I_source
Circuit Current (only for
PT7M7823/24/25)
Vcc=5.5V
PT7M782xT/S/R/K/Z/Y, RESET=0V,
-
Vcc=3.6V
-
800
µA
-
400
r
MR pull-up resistor
(internal)
PT7M7811/7812
PT7M7823/7824/7825
10
20
35
52
30
kΩ
75
Note: 1. Parameters of room temperature guaranteed by production test and parameters of full-temperature guaranteed by design.
2. Valid for both RESET and RESET. V_RST (V_RTH-) is the Reset threshold voltage when V_CC from high to low level, and
V_RTH+ is the Reset threshold voltage when V_CC from low to high level. V_RN is nominal reset threshold voltage.
3. WDI is internally serviced within the watchdog period if WDI is left unconnected.
11-0012
PT0109S-15
10/14/10
4