EUP8084
Absolute Maximum Ratings
Input Voltage to GND (V
INA
, V
INB
) --------------------------------------------------------------------------- 6V
Adapter Voltage to GND (V
ADP
) -------------------------------------------------------------------- -0.3V to 6V
LX to GND
(V
LX
)
---------------------
-------------------------------------------------- -0.3V to V
IN
+0.3V
FB to GND (V
FB
) ---------------------------------------------------------------------------- -0.3V to V
IN
+0.3V
ENA, ENB, EN_BAT to GND (V
EN
) -------------------------------------------------------------- -0.3V to 6V
BAT, ISET, STAT (V
X
) --------------------------------------------------------------------- -0.3V to V
ADP
+0.3V
Operating Junction Temperature Range (T
J
)
-------------------------------------------------
-40℃ to 150℃
260℃
Maximum Soldering Temperature (at leads, 10sec) ----------------------------------------------------
Thermal Information
Maximum Power Dissipation (P
D
)
---------------------------------------------------------------------------
2W
Thermal Resistance
(θ
JA
) ---------------------------------------------------------------------------------
50℃/W
Electrical Characteristics
(V
INB
=3.6V; T
A
= -40℃ to 85℃, unless otherwise noted. Typical values are T
A
=25℃)
Symbol
Parameter
Conditions
EUP8084
Min. Typ. Max.
2.6
V
INB
Rising
V
UVLO
UVLO Threshold
Hysteresis
V
INB
Falling
V
OUT
V
OUT
I
Q
I
SHDN
I
LIM
R
DS(ON)H
R
DS(ON)L
I
LXLEAK
Output Voltage Tolerance
Output Voltage Range
Quiescent Current
Shutdown Current
P-Channel Current Limit
High-Side Switch On Resistance
Low-Side Switch On Resistance
LX Leakage Current
V
INB
= 5.5V, V
LX
= 0 to V
INB
V
INB
= 2.8V to 5.5V
V
INB
= 3.6V
V
OUTB
= 1.0V
1.2
From Enable to Output Regulation
1.5
120
150
20
0.4
0.588
0.2
0.6
No Load
ENB = GND
1
0.26
0.28
1
0.4
0.612
0.2
1.8
I
OUTB
= 0 to 250mA,
V
INB
= 2.6V to 5.5V
2.4
-3
0.6
36
1
3
V
INB
200
5.5
2.6
Unit
V
V
mV
V
%
V
µA
µA
A
Ω
Ω
µA
%/V
V
µA
MHz
µs
℃
℃
V
Step-Down Converter
V
IN
Input Voltage
△V
Linereg
/△V
IN
Line Regulation
Feedback Threshold Voltage
V
FB
Accuracy
I
FB
FB Leakage Current
F
OSC
T
S
T
SD
T
HYS
V
EN(L)
DS8084
Ver1.0
Oscillator Frequency
Startup Time
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
Enable Threshold Low
Apr. 2008
5
EUTECH [ EUTECH MICROELECTRONICS INC ]
