R5528Z SERIES
Overvoltage Protector IC with Reverse Current Protection
NO.EA-313-181010
1
OUTLINE
The R5528Z001A is a CMOS-based overvoltage protector IC with reverse current protection that use an NMOS
pass transistor to achieve ultra-low on resistance (Typ. 54mΩ). Overvoltage protection threshold is as high as
6.8V±3%. Also, continuous current capability is as high as 3A.
Internally, the R5528Z001A consists of a reverse current protection circuit, a soft-start circuit, a startup
debounce circuit, an undervoltage lockout (UVLO) circuit, and a thermal shutdown circuit.
The R5528Z001A is offered in a small and thin WLCSP-9-P1 package which achieves the smallest possible
footprint solution on boards where area is limited.
FEATURES
Input Voltage Range (V
IN
) ································· 2.3V to 36V
Output Current (I
OUT
) ········································ Max. DC 3A
Switch On Resistance (R
ON
) ······························ 54mΩ (V
IN
= 5.0V, I
OUT
= 100ｍA)
OVP Threshold Accuracy ·································· 6.8V±3%
PG Function
Reverse Current Protection Circuit
Soft-start Circuit
Startup Debounce Circuit ·································· 15ms
Thermal Shutdown Circuit
Package ························································ WLCSP-9-P1 ( 1.27 mm x 1.27 mm x 0.64 mm )
APPLICATIONS
Smartphones, Tablet PCs
Portable devices
R5528Z
NO.EA-313-181010
2
BLOCK DIAGRAMS
V
IN
Soft
Start
CHARGE PUMP
ENB
OVLO
V
OUT
PG
3V
The rmal
S
hutdown
GATE DRIVER
TIMING AND
CONTROL
LOGIC
VREF
EN
OK
GND
Figure 1. R5528Z001A
SELECTION GUIDE
Product Name Package Quantity per Reel Pb Free Halogen Free
R5528Z001A-E2-F WLCSP-9-P1 5,000pcs Yes Yes
PIN CONFIGULATIONS
B C
2
1
A
3
CB
1
A
2
3
Figure 2. Top View Figure 3. Bottom View