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L4989MD

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19
L4989D, L4989MD Electrical specifications
Doc ID 022376 Rev. 2 7/19
2 Electrical specifications
2.1 Absolute maximum ratings
Note: Maximum ratings are absolute ratings; exceeding any one of these values may cause
permanent damage to the integrated circuit.
2.2 Thermal data
Table 3. Absolute maximum ratings
Symbol Parameter Value Unit
V
Vsdc
DC supply voltage -0.3 to 40 V
I
Vsdc
Input current Internally limited
V
Vo
DC output voltage -0.3 to 6 V
I
Vo
DC output current Internally limited
V
Wi
Watchdog input voltage -0.3 to V
Vo
+ 0.3 V
V
od
Open Drain output voltage -0.3 to V
Vo
+ 0.3 V
I
od
Open Drain output current Internally limited
V
cr
Reset delay voltage -0.3 to V
Vo
+ 0.3 V
V
cw
Watchdog delay voltage -0.3 to V
Vo
+ 0.3 V
V
WEn
Watchdog Enable input voltage -0.3 to 40 V
T
j
Junction temperature -40 to 150 “C
V
ESD
ESD voltage level (HBM-MIL STD 883C) ±2 kV
Table 4. Thermal data
Symbol Parameter S0-8 S0-12+4+4 Unit
R
th-jamb
Thermal resistance junction to ambient 130 to 180 50
(1)
1. With 6 sq. cm
on board heat sink.
°C/W
Electrical specifications L4989D, L4989MD
8/19 Doc ID 022376 Rev. 2
2.3 Electrical characteristics
V
S
= 5.6 V to 31 V, T
j
= -40°C to +150°C unless otherwise specified.
Table 5. General
Pin Symbol Parameter Test condition Min. Typ. Max. Unit
V
o
V
o_ref
Output voltage
V
S
= 5.6 to 31 V;
I
o
= 1 to 150 mA
4.85 5.0 5.15 V
V
o
I
short_13
Short circuit current V
S
=13.5V
(1)
1. See Figure 3.
160 210 250 mA
V
o
I
lim
Output current limitation V
S
=13.5V
(1)
170 250 290 mA
V
S
, V
o
V
line
Line regulation voltage
V
S
= 5.6 to 31 V;
I
o
= 1 to 150 mA
25 mV
V
o
V
load
Load regulation voltage I
o
= 1 to 150 mA 25 mV
V
S
, V
o
V
dp
Drop voltage I
o
= 150 mA 180 400 mV
V
S
, V
o
SVR Ripple rejection fr = 100 Hz 55 dB
V
S
, V
o
I
qs_1
Current consumption with
watchdog not active
I
qs_1
=I
VS
-I
o
V
S
=13.5V;
I
o
<1mA;
WE
n
=low
69 115 µA
V
S
, V
o
I
qs_10
Current consumption with
watchdog not active
I
qs_10
=I
VS
-I
o
V
S
=13.5V;
I
o
=10mA;
WE
n
=low
127 300 µA
V
S
, V
o
I
qs_50
Current consumption with
watchdog not active
I
qs_50
=I
VS
-I
o
V
S
=13.5V;
I
o
=50mA;
WE
n
=low
498 900 µA
V
S
, V
o
I
qs_150
Current consumption with
watchdog not active
I
qs_150
=I
VS
-I
o
V
S
=13.5V;
I
o
=150mA;
WE
n
=low
1.40 2 mA
V
S
, V
o
I
qn_1
Current consumption with
watchdog active
I
qn_1
=I
VS
-I
o
V
S
=13.5V;
I
o
<1mA;
WE
n
=high
110 170 µA
V
S
, V
o
I
qn_10
Current consumption with
watchdog active
I
qn_10
=I
VS
-I
o
V
S
=13.5V;
I
o
=10mA;
WE
n
=high
168 350 µA
V
S
, V
o
I
qn_50
Current consumption with
watchdog active
I
qn_50
=I
VS
-I
o
V
S
=13.5V;
I
o
=50mA;
WE
n
=high
538 1000 µA
V
S
, V
o
I
qn_150
Current consumption with
watchdog active
I
qn_150
=I
VS
-I
o
V
S
=13.5V;
I
o
=150mA;
WE
n
=high
1.45 2 mA
Tw
Thermal protection
temperature
150 190 °C
Tw _hy
Thermal protection
temperature hysteresis
10 °C
L4989D, L4989MD Electrical specifications
Doc ID 022376 Rev. 2 9/19
Table 6. Reset
Pin Symbol Parameter Test condition Min. Typ. Max. Unit
Res Vres_l Reset output low voltage
R
ext
=5k to V
o
;
V
o
>1V
0.4 V
Res I
Res_lkg
Reset output high leakage
current
V
Res
=5V 1 µA
Res R
Res
Pull up internal resistance Versus V
o
10 20 50 k
Res V
o_th
Reset threshold voltage
V
S
= 5.6 to 31 V;
I
o
= 1 to 150 mA
6% 8% 10%
Below
V
o_ref
Vcr V
rlth
Reset timing low threshold V
S
= 13.5 V 10% 13% 16%
V
o_ref
Vcr V
rhth
Reset timing high threshold V
S
= 13.5 V 44% 47% 50%
V
o_ref
Vcr I
cr
Charge current V
S
=13.5V 8 15 30 µA
Vcr I
dr
Discharge current V
S
=13.5V 8 15 30 µA
Res T
rr_2
Reset reaction time
(1)
1. When V
o
becomes lower than 4V, the reset reaction time decreases down to 2µs assuring a faster reset
condition in this particular case.
V
o
=V
o_th
-100 mV 100 250 700 µs
Res T
rd
Reset delay time
V
S
=13.5V;
Ctr = 1 nF
65 115 165 ms
Table 7. Watchdog
Pin Symbol Parameter Test condition Min. Typ. Max. Unit
Wi Vih Input high voltage V
S
= 13.5 V 3.5 V
Wi Vil Input low voltage V
S
= 13.5 V 1.5 V
Wi Vih Input hysteresis V
S
= 13.5 V 500 mV
Wi Rwi Pull down resistor V
S
= 13.5 V 30 100 250 K
Vcw Vwhth High threshold V
S
= 13.5 V 44% 47% 50%
V
o_ref
Vcw Vwlth Low threshold V
S
= 13.5 V 10% 13% 16%
V
o_ref
Vcw Icwc Charge current
V
S
=13.5V;
Vcw = 0.1 V
51020µA
Vcw Icwd Discharge current
V
S
=13.5V;
Vcw = 2.5 V
1.25 2.5 5 µA
Vcw Twop Watchdog period
V
S
=13.5V;
Ctw = 47 nF
20 40 80 ms
Res twol Watchdog output low time
V
S
=13.5V;
Ctw = 47 nF
4816ms
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L4989MD

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Manufacturer:
STMicroelectronics
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LDO Voltage Regulators LW PWR VOLT REGULATR
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