Ldo 3.3V; Power-On Reset Characteristics - Holtek HT45F23A Manual

LDO 3.3V

Symbol Parameter
V Supply Voltage
DDIN
V Output Voltage
DDOUT
I Current Consumption
DD
I Output Current
OUT
t LDO Turn On Stable Time
START
Note: 1.This LDO can provide stable power supply for PIR sensor with a 10µF cap.
2. The VREF pin should be connected to 10µF for ADC reference voltage and 10µF for PIR sensor.

Power-on Reset Characteristics

Symbol Parameter
V VDD Start Voltage to Ensure Power-on Reset
POR
RR VDD raising rate to Ensure Power-on Reset
VDD
Minimum Time for VDD Stays at V
t
POR
Power-on Reset
Rev. 1.40
TinyPower Flash MCU with OPA & Comparators
TM
Test Conditions
V Conditions
DD
— —
— —
— After startup, no load
5V V =1µF
CAP
5V V =10uF
CAP
V
DD
—
—
to Ensure
POR
—
V
D D
t
P O R
18
HT45F23A/HT45F24A
Min. Typ.
3.6 —
3.13 3.30
— 50
200 —
— —
Test Conditions
Min. Typ. Max. Unit
Conditions
— —
— 0.035
— 1
R R
V D D
V
P O R
T i m e
Ta=25˚C
Max. Unit
5.5 V
3.46 V
70 µA
1100 µA
1600 ms
Ta=25˚C
— 100 mV
— — V/ms
— — ms
March 29, 2019