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L9777B

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P25
Electrical and thermal characteristics L9777
22/25 DocID13496 Rev 4
VDD (option C)
VDD,VCC DIFFVR
Output voltage difference
between VDD and VCC
I
VDD
= 1 to 50 mA
V
I
= 6.6 to 31 V
-25 - 25 mV
VDD I
LIM2
VDD output limitation
current
V
I
= 6.6 to 31 V 55 100 240 mA
VI,VDD V
DP2
Dropout voltage I
VDD
= 50 mA; VI = 6.6 to 31 V - - 1.5 V
VDD V
LINE2
VDD Line regulation
voltage
V
I
= 6.6 to 31 V
I
VDD
= 1 to 50 mA
- - 25 mV
VDD V
LOAD2
VDD Load regulation
voltage
I
VDD
= 1 to 50 mA
V
I
= 6.6 to 31 V
- - 25 mV
VDD V
DDUN
VDD undervoltage
threshold
V
I
= 6.6 to 31 V
V
CC
-
400
V
CC
-
300
V
CC
-
200
mV
VDD T
FVDD
VDD spike dependent
undervoltage filter time
VDD transition from 5 V to 4 V 1 - - μs
WD
WD V
WDTHH
Input high voltage - - -
0.3
V
CC
V
WD V
WDTHL
Input low voltage -
0.7
V
CC
--V
WD V
WDHY
WD input hysteresis - 250 500 800 mV
WD R
WD
Pull down resistor - 15 35 80 kΩ
DI
WDC
Charge current V
D
= 0.1 V; V
I
= 13.5 V 10 20 40 μA
DI
WDD
Discharge current V
D
= 2.5 V; V
I
= 13.5 V 10 20 40 μA
DV
DTHL
Low threshold - 0.52 0.62 0.72
DV
DTHH
High threshold - 1.14 1.24 1.34 V
DT
WOP
Watchdog period CD =10 nF 20 40 80 ms
DT
WOL
Watchdog output low
time
CD =10 nF 5 10 20 ms
WD_EN
WD_EN V
WENTL
WD_EN input low
voltage
---
0.30
V
CC
-
WD_EN V
WENTH
WD_EN input high
voltage
-
0.70
V
CC
---
WD_EN V
WENHY
WD_EN input hysteresis - 200 500 800 mV
WD_EN I
WD_EN
Pull up current Option A - 2.5 5 10 μA
WD_EN I
WD_EN
Pull down current
Option B and C
- 5 10 20 μA
Table 4. Electrical and thermal characteristics (continued)
Pin Symbol Parameter Test condition Min. Typ. Max. Unit
DocID13496 Rev 4 23/25
L9777 Package information
24
8 Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK
®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK
®
is an ST trademark.
Figure 14. PowerSSO-12 mechanical data and package dimensions
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Revision history L9777
24/25 DocID13496 Rev 4
9 Revision history
Table 5. Revision history
Date Revision Description of changes
10-May-2007 1 Initial release.
14-Dec-2010 2
Changed ESD parameter values in Table 3.
Modified Section 1.3: Option C features on page 7.
Modified Section 6.3: Option C on page 18.
Updated Table 4: Electrical and thermal characteristics on
page 19.
Document status promoted from preliminary data to
datasheet.
11-Jan-2012 3
Update Table 1: Device summary on page 1.
Updated Figure 14: PowerSSO-12 mechanical data and
package dimensions on page 23.
20-Feb-2014 4 Updated disclaimer.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P25

L9777B

Mfr. #:
Buy L9777B
Manufacturer:
STMicroelectronics
Description:
LDO Voltage Regulators Low-Power Reg 200 + 50 mA
Lifecycle:
New from this manufacturer.
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