Datasheet
NJW4109
- 1 -
Ver.1.0
45 V, I
O
= 500 mA LDO WITH POWER-GOOD
■ FEATURES
● Fast transient response
● Wide operating voltage 4.0 V to 40 V
● Wide operating temperature T
a
=−40°C to 125°C
● Outputvoltage accuracy V
O
±1.0%
(V
IN
= V
O
+ 1Vto 40V, I
O
= 0mA to 500mA, T
a
= 25°C)
● Output current 500 mA (min)
● ON/OFF control
● Ceramic capacitor compatible
● Power-goodoutput
● Undervoltage lockout(UVLO)
● Thermal shutdown
● Overcurrent protection
● Package TO-252-5-L5
■ APPLICATIONS
● Car infotainment
● Active antenna power supplies
● Automotivecamera power supplies
● External power supplies for industrial equipment
■ DESCRIPTION
The NJW4109 is a 45 V, I
O
= 500 mA low dropout regulator
with power-good. Power-good outputs whether the output
voltage is within the normal range as a flag and notifies the
MCU of the abnormal state. This device achieves fast
transient response and offers stable output voltage even at
lineor load fluctuations.
The NJW4109 provides outstanding high output voltage
accuracy thatguaranteed ±1.0% under the conditions of V
IN
=
V
O
+ 1 V to 40 V,I
O
= 0mA to 500 mA.
Moreover, wide operating voltage, wide operating
temperature, and power-good output make the NJW4109
ideal for automotive equipment or applications that require
high reliability.
■ TYPICAL APPLICATION
■ PRODUCT INFORMATION
PRODUCT NAME
FUNCTION
NJW4109DL5-A
PG detection of V
O
due to V
IN
dropis valid
NJW4109DL5-B
PG detectionof V
O
due to V
IN
dropis invalid
■ BLOCK DIAGRAM
NJW4109
VOUT
GND
1.0
µF
V
O
V
IN
2
.2µF
CONTROL
PG
V
PG
Pull-up
resistor
5V
V
CONT
A-Version
B-Version
VIN
VOUT
CONTROL
GND
Current
Limit
Thermal
Protection
UVLO
PG
Reference
Voltage
PG_H
PG_L
VIN
VOUT
CONTROL
GND
Current
Limit
Thermal
Protection
UVLO
PG
PG_H
PG_L
Reference
Voltage
Datasheet
NJW4109 series
- 2 -
Ver.1.0
■ OUTPUT VOLTAGE RANK
PRODUCT NAME
OUTPUT VOLTAGE
NJW4109DL5-08A
8.0V
NJW4109DL5-08B
8.0V
■ PIN CONFIGURATION
TO-252-5-L5
PIN NO.
NAME
FUNCTION
1
VIN
Input pin
2
CONTROL
ON/OFF control pin (activehigh)
3
GND
Ground pin
4
PG
Power-good pin (N-channel open-drain)
5
VOUT
Output pin
■ PRODUCT NAME INFORMATION
■ ORDERING INFORMATION
PRODUCT NAME
PACKAGE
RoHS
HALOGEN-
FREE
TERMINAL
FINISH
MARKING
WEIGHT
(mg)
MOQ
(pcs)
NJW4109DL5-08A (TE1)
TO-252-5-L5
Yes
Yes
Sn-2Bi
109A08
301
3000
NJW4109DL5-08B (TE1)
TO-252-5-L5
Yes
Yes
Sn-2Bi
109B08
301
3000
Top View
VIN
GND
VOUT
PG
CONTROL
3
1
2
3
4
5
NJW4109 DL5 - 08 A - (TE1)
Part Number
Package
DL5:TO-252-5-L5
Output
Voltage
08: 8.0 V
Taping Form
Version
A: PG detection of V
O
due to V
IN
drop is valid
B: PG detection of V
O
due to V
IN
drop is invalid