MIC2779_06 Datasheet, PDF (3/6 Pages) Micrel Semiconductor – Voltage Monitor with Adjustable Hysteresis

MIC2779
Absolute Maximum Ratings (Note 1)
Supply Voltage (V_DD).......................................–0.3V to +7V
Input Voltages (V_LTH, V_HTH, V_/RST, V_RST)........–0.3V to +7V
/RST, RST Output Current (I_/RST), (I_RST).................... 20mA
Storage Temperature (T_S) ........................ –65°C to +150°C
ESD Rating, Note 3....................................................... 2kV
Micrel, Inc.
Operating Ratings (Note 2)
Supply Voltage (V_DD) .................................. +1.5V to +5.5V
Input Voltages (V_LTH, V_HTH, V_/RST, V_RST).....–0.3V to +6.0V
Ambient Temperature Range (T_A) .............. –40°C to +85°C
Package Thermal Resistance................................ 256°C/W
Electrical Characteristics
1.5V ≤ V_DD ≤ 5.5V; T_A = +25°C, bold values indicate –40°C ≤ T_A ≤ +85°C; unless noted
Symbol
Parameter
Condition
I_DD
I_LTH, I_HTH
Supply Current
Input Leakage Current
/RST, RST not asserted
Min Typ
1
5
V_REF
t_D
t_RESET
V_OL
V_OH
Note 1.
Note 2.
Note 3.
Note 4.
Reference Voltage
MIC2779H/L-2
1.215
MIC2779H/L-1
1.228
Propagation Delay
V_LTH = V_REF(max) +100mV to
V_REF(min) – 100mV
Reset Pulse Width
140
Reset Output Low Voltage
Reset Output High Voltage
/RST asserted or RST not asserted,
I_SINK = 1.6mA, V_DD ≥ 1.6V
/RST asserted or RST not asserted,
I_SINK = 100µA, V_DD ≥ 1.2V,
/RST not asserted or RST asserted,
I_SOURCE = 500µA, V_DD ≥ 1.6V
/RST not asserted or RST asserted,
I_SOURCE = 50µA, V_DD ≥ 1.2V,
0.8V_DD
0.8V_DD
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
V_DD operating range is 1.5V to 5.5V. Output is guaranteed to be held low down to V_DD = 1.2V.
1.240
5
Max
2
10
1.265
1.252
420
0.3
0.4
Units
µA
pA
nA
V
V
V
µs
ms
V
V
V
V
Timing Diagram
V_HTH
V_BATT
V_LTH
0V
V_/RST
V_OH
V_OL
V_RST
V_OH
V_OL
A
t_RST
A
t_RST
Propagation delays not shown for clarity.
Note A. The MIC2779 ignores very brief transients.
See “Applications Information” for details.
January 2006
3
MIC2779