IMP527
Pin Configuration
SO/MicroSO
VDD
RSW-OSC
CS
1
2
3
4
8
7
6
5
REL-OSC
IMP527
V
A
VB
LX
GND
527_02.eps
Ordering Information
Part Number
IMP527EMA
IMP527ESA
IMP527/D*
Input Voltage
Regulated Output Voltage Temperature Range
Pins-Package
8-MicroSO
8-SO
0.9V to 2.5V
0.9V to 2.5V
0.9V to 2.5V
0.9V to 2.5V
YES
YES
YES
YES
–40°C to +85°C
–40°C to +85°C
25°C
Dice
IMP527/D1**
25°C
Dice
* Disable pad not active
** Disable pad active
Absolute Maximum Ratings
Supply Voltage, VDD, VRSW-OSC and VREL-OSC . . –0.5V to +3.5V
Note: All voltages are referenced to GND.
Storage Temperature Range . . . . . . . . . . . . . . . . – 65°C to +150°C
Power Dissipation (SO package) . . . . . . . . . . . . 400mW
Power Dissipation (MicroSO package) . . . . . . . 300mW
These are stress ratings only and functional operation is not implied.
Exposure to absolute maximum ratings for prolonged time periods may
affect device reliability.
Electrical Characteristics
Unless otherwise noted, VDD = 1.5V, RSW = 1MΩ, REL = 1MΩ, and TA = 25°C.
Parameter
Symbol Conditions
Min
TypMax
Units
ON-resistance of MOS Switch
RDS(ON)
I = 50mA
15
Ω
V
Operating Voltage
0.9
80
2.5
Output Voltage at CS
VCS
VCS
VDD = 1.5V, See Figure 1, Table 1
VDD = 0.9V, See Figure 1, Table 2
VDD = 1.5V, See Figure 1
Disable = HIGH
90
50
V
Output Voltage at CS
V
Output Voltage Peak-to-Peak
Quiescent VDD Supply Current, Disabled
(Disable pin available on die only)
Quiescent VDD Supply Current, Disabled
VA-VB
IQDIS
180
70
VP-P
nA
IQDIS
RSW-OSC = GND
1.0
2.0
µA
VDD = 1.5V
Input Current at VDD Pin
IDD
IIN
VDD = 0.9V to 1.5V
1.5
32
mA
mA
Hz
kHz
%
Input Current: IDD Plus Inductor Current
VA-B Output Drive Frequency
Boost Converter Switching Frequency
Switching Duty Cycle
VDD = 1.5V, See Figure 1, Table 1
VDD = 1.5V, See Figure 1, Table 1
VDD = 1.5V, See Figure 1, Table 1
VDD = 1.5V, See Figure 1
26
500
26
fEL
fSW
DSW
VDISL
87.5
Disable Input LOW Voltage
GND
0.2
V
(Disable pin available on die only)
Disable Input HIGH Voltage
VDISH
VDD-0.5V
VDD
V
(Disable pin available on die only)
ꢀ
© 2000 IMP, Inc.
2
408-432-9100/www.impweb.com
IMP [ IMP, INC ]
