RT6158A
Marking Information
0M : Product Code
Pin Configuration
(TOP VIEW)
A1
A2
A3
A4
A5
0M YM
DNN
YMDNN : Date Code
PVIN
B1
PVIN
B2
PVIN
B3
PVIN
B4
AVIN
B5
LX1
C1
LX1
C2
LX1
C3
LX1
C4
EN
C5
PGND PGND PGND MODE AGND
D1
D2
D3
D4
D5
LX2
E1
LX2
E2
LX2
E3
LX2
E4
AGND
E5
VOUT VOUT
VOUT VOUT
FB
WL-CSP-25B 2.07x2.33 (BSC)
Functional Pin Description
Pin No.
A1, A2, A3, A4
A5
B1, B2, B3, B4
B5
C1, C2, C3
Pin Name
PVIN
AVIN
LX1
EN
PGND
Pin Function
Power input supply. The input voltage range is from 2.5V to 5V after soft-start is
finished. Connect input capacitors between this pin and PGND with a wide PCB
trace.
Analog input supply. AVIN Connect to PVIN.
Switching node 1. Connect to inductor.
Chip enable. This input must not be left floating and must be terminated.
Power ground. Connect to this pin with the shortest path for power transmission
to reduce parasitic component effect.
High for PFM mode, low for FCCM mode. This pin also can be used to
synchronize switching frequency with 2.2MHz to 2.6MHz. This input must not
be left floating and must be terminated.
Analog ground. This is the signal reference ground for the IC.
Switching node 2. Connect to inductor.
Output voltage pin. PCB trace length from VOUT to the output filter capacitor
should be as short and wide as possible.
Output voltage feedback. The typical value of the voltage at the FB pin is
800mV.
C4
C5, D5
MODE
AGND
D1, D2, D3, D4 LX2
E1, E2, E3, E4
E5
VOUT
FB
Copyright
©
2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
2
DS6158A-05 August 2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
