ML4890
ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings are those values beyond which
the device could be permanently damaged. Absolute
maximum ratings are stress ratings only and functional
device operation is not implied.
V
BOOST
........................................................................ 7V
Voltage on Any Other Pin ... GND –0.3V to V
BOOST
+0.3V
Peak Switch Current (I
PEAK
) .......................................... 1A
Average Switch Current (I
AVG
) ............................... 500mA
LDO Output Current ............................................. 250mA
Junction Temperature .............................................. 150°C
Storage Temperature Range .................... –65°C to +150°C
Lead Temperature (Soldering 10s) .......................... +260°C
Thermal Resistance (θ
JA
)
Plastic SOIC .................................................... 110°C/W
OPERATING CONDITIONS
Temperature Range
ML4890CS-X ............................................ 0°C to +70°C
ML4890ES-X ......................................... –20°C to +70°C
V
IN
Operating Range
ML4890CS-X ................................................ 1.0V to 6V
ML4890ES-X ................................................. 1.1V to 6V
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, V
IN
= Operating Voltage Range, T
A
= Operating Temperature Range. (Note 1)
PARAMETER
Supply
V
IN
Current
V
IN
= 6V
SHDN = high
V
OUT
Quiescent Current
V
L
Quiescent Current
Reference
Output Voltage (V
REF
)
PFM Regulator
Pulse Width (T
ON
)
LDO
DC Output Voltage (V
OUT
)
ML4890-5
ML4890-3
ML4890-T
Load Regulation
ML4890-5
V
BOOST
= V
OUT
+ 0.5V, I
OUT
< 200mA
V
BOOST
= V
OUT
+ 0.5V, I
OUT
< 100mA
V
BOOST
= V
OUT
+ 0.5V, I
OUT
< 80mA
See Figure 1
V
IN
= 1.2V, I
OUT
< 7mA
V
IN
= 2.4V, I
OUT
< 50mA
V
IN
= 1.2V, I
OUT
< 14mA
V
IN
= 2.4V, I
OUT
< 75mA
V
IN
= 1.2V, I
OUT
< 15mA
V
IN
= 2.4V, I
OUT
< 60mA
See Figure 1
V
IN
= 1.2V, I
OUT
< 7mA
V
IN
= 2.4V, I
OUT
< 50mA
V
IN
= 1.2V, I
OUT
< 14mA
V
IN
= 2.4V, I
OUT
< 75mA
V
IN
= 1.2V, I
OUT
< 15mA
V
IN
= 2.4V, I
OUT
< 60mA
5
4.85
3.2
2.91
4.85
4.85
3.2
3.2
2.91
2.91
5.0
3.3
3.0
5.0
5.0
3.3
3.3
3.0
3.0
5.15
3.4
3.09
5.15
5.15
3.4
3.4
3.09
3.09
300
500
300
500
300
500
V
V
V
V
V
V
V
V
V
mV
mV
mV
mV
mV
mV
mV
P-P
4.5
5
5.5
µs
0 < I
PIN2
< –5µA,
195
200
205
mV
V
BOOST
= V
OUT
+ 0.5V
60
15
8
75
25
10
1
µA
µA
µA
µA
CONDITIONS
MIN
TYP.
MAX
UNITS
ML4890-3
ML4890-T
Dropout Voltage
ML4890-5
ML4890-3
ML4890-T
Output Ripple
Shutdown
SHDN Threshold
SHDN Bias Current
Note 1:
0.5
–100
0.8
1.0
100
V
nA
Limits are guaranteed by 100% testing, sampling, or correlation with worst case conditions.
3
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
