CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are
at the specified temperature and are pulsed tests, therefore: T
J
= T
C
= T
A
Electrical Specifications
PARAMETER
V
IN
= 3.3V, V
BOOST
= 12V, R
OSC
= 62k, T
A
= 25°C, Unless Otherwise Specified.
CONDITIONS
MIN
TYP
MAX
UNIT
DESCRIPTION
DC/DC BOOST CONVERTER
IQ1_B
IQ2_B
V(FBB)
V
REF
V
ROSC
I(FBB)
V
DDB
D
MAX
I(LX)
MAX
R
DS-ON
I
LEAK-SWITCH
V
BOOST
V
BOOST
/V
IN
V
BOOST
/I
O1
F
OSC-RANGE
F
OSC1
V
COM
BUFFER
V
DDC
IQ1, V
DDC
IQ2, V
DDC
V
COM
-offset
I(INC)
R
O
(V
COM
)
Supply Voltage Range
V
DDC
Disable Current
V
DDC
Enable Current
Accuracy of V
COM
Output Voltage
V
COM
Input Bias Currents
V
COM
Output Impedance
V
DDC
= 12V, EN = 0V
V
DDC
= 12V, V
EN
= V
DDB
, no load
2V < V
COM
< (V
DDC
- 2V)
Current magnitude
V
DDC
= V
BOOST
= 12V, V
COM
= 6V with
-100mA < I
LOAD
< 100mA
C
LOAD
for V
COM
> 0.47µF, MLCC
-10
-0.1
0.01
0.25
6
5.5
1.7
15
20
5
+10
0.1
V
µA
mA
mV
µA
Quiescent Current - Shut-down
Quiescent Current - Switching
Feedback Voltage
Reference Voltage
Oscillator Set Voltage
Feedback Input Bias Current
Boost Converter Supply Range
Maximum Duty Cycle
Peak Internal FET Current
Switch On Resistance
Switch Leakage Current
Output Range
Line Regulation
Load Regulation
Frequency Range
Switching Frequency
at V
BOOST
= 10V, I(LX) total = 350mA
I(LX) total
V
BOOST
> V
IN
+ V
DIODE
2.7V < V
IN
< 13.2V, V
BOOST
= 15V
50mA < I
O1
< 250mA
R
OSC
range = 240k to 60k
R
OSC
= 62k
200
900
1000
5
0.1
0.5
1200
1100
2
85
92
1.75
0.22
1
17
EN = 0V
EN = V
DDB
1.275
1.260
1.260
0.8
4.8
1.300
1.310
1.325
0.1
17
10
8
1.325
1.360
1.390
µA
mA
V
V
V
µA
V
%
A
µA
V
%
%
kHz
kHz
I
COM
(max)
PSRR
CMRR
Output Current Limit
Supply Voltage Rejection
Common Mode Voltage Rejection
V
INC
= V
DDC/2
, 9V < V
DDC
< 15V
V
DDC
= 12V, 2V < V
INC
< 10V
60
60
150
102
93
mA
dB
dB
FN7317 Rev 2.00
February 4, 2005
Page 2 of 16
EL7584
Electrical Specifications
PARAMETER
V
IN
= 3.3V, V
BOOST
= 12V, R
OSC
= 62k, T
A
= 25°C, Unless Otherwise Specified.
(Continued)
CONDITIONS
MIN
TYP
MAX
UNIT
DESCRIPTION
POSITIVE REGULATED CHARGE PUMP (V
ON
)
Most positive V
ON
output depends on the magnitude of the V
DDP
input voltage (normally connected to V
BOOST
) and the external component
configuration (doubler or tripler)
V
DDP
IQ1(V
DDP
)
IQ2(V
DDP
)
I
DP1
I
DP2
V(FBP)
I(FBP)
I(DRVP)
Supply Input for Positive Charge Pump
Quiescent Current - Shut-down
Quiescent Current - Switching
Disable Charge Current
Enable Discharge Current
Feedback Reference Voltage
Feedback Input Bias Current
RMS DRVP Output Current
V
DDP
= 12V
V
DDP
= 6V
ILR_V
ON
F
PUMP
Load Regulation
Charge Pump Frequency
5mA < I
L
< 15mA
Frequency set by R
OSC
- see boost section
15
-0.5
0.03
0.5*F
OSC
0.5
Usually connected to V
BOOST
output
EN = 0V
EN = V
DDB
EN = 0V, DP = 0V
EN = V
DDB
, DP = 5V
1.5
100
1.245
5
11.5
2.3
1.9
200
1.310
0.1
60
17
20
5
2.5
300
1.375
V
µA
mA
mA
nA
V
µA
mA
mA
%/mA
NEGATIVE REGULATED CHARGE PUMP (V
OFF
)
Most negative V
OFF
output depends on the magnitude of the V
DDN
input voltage (normally connected to V
BOOST
) and the external component
configuration (doubler or tripler)
V
DDN
IQ1(V
DDN
)
IQ2(V
DDN
)
V(FBN)
I(FBN)
I(DRVN)
Supply Input for Negative Charge Pump
Quiescent Current - Shut-down
Quiescent Current - Switching
Feedback Reference Voltage
Feedback Input Bias Current
RMS DRVN Output Current
Magnitude of input bias
V
DDN
= 12V
V
DDN
= 6V
ILR_V
OFF
F
PUMP
Load Regulation
Charge Pump Frequency
-15mA < I
L
< -5mA
Frequency set by R
OSC
- see boost section
15
-0.5
0.03
0.5*F
OSC
0.5
Usually connected to V
BOOST
output
ENBN = 0V
ENBN = V
DDB
-80
5
4.5
2.3
0
0.1
60
17
20
5
+80
V
µA
mA
mV
µA
mA
mA
%/mA
ENABLE CONTROL LOGIC
V
HI
-EN
V
LO
-EN
I(EN)
Enable Input High Threshold
Enable Input Low Threshold
Enable Input Bias Current
V
EN
= 5V
3.7
1.6
0.5
7.5
V
V
µA
OVER-TEMPERATURE PROTECTION
T
OT
T
HYS
Over-temperature Threshold
Over-temperature Hysteresis
130
40
°C
°C
FN7317 Rev 2.00
February 4, 2005
Page 3 of 16
EL7584
Pin Descriptions
PIN NUMBER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
I = Input, O = Output, S = Supply
PIN NAME
SS
FBB
EN
VDDB
LX1
LX2
VSSN*
DRVN
VDDN
FBN
DP
INC
VDDC
VCOM
VSSC*
FBP
VDDP
DRVP
VSSP*
PGND*
PGND*
VREF
ROSC
VSSB*
PIN TYPE
I
I
I
P
O
O
P
O
P
I
I
I
P
O
P
I
P
O
P
P
P
O
I
P
PIN FUNCTION
Soft-Start input: a capacitor determines the current limit ramp time.
Voltage feedback input determines the value of V
BOOST
.
Starts internal power sequencing of V
BOOST
, V
OFF
, V
COM
and V
ON
outputs
(See Applications Information) ; active HIGH input.
Positive supply for V
BOOST
DC/DC controller.
Boost inductor saturating MOSFET #1.
Boost inductor saturating MOSFET #2.
Ground return for V
OFF
regulator.
Pump capacitor driver for V
OFF
regulator.
Positive supply for V
OFF
regulator.
Voltage feedback input determines the value of V
OFF
.
An external capacitor increases V
ON
power up delay time.
V
COM
Buffer input.
Positive supply for V
COM
Buffer.
V
COM
Buffer output.
Ground return for V
COM
Buffer.
Voltage feedback input determines the value of V
ON
.
Positive supply for V
ON
regulator.
Pump capacitor driver for V
ON
regulator.
Ground return for V
ON
regulator.
Ground return for MOSFET #1.
Ground return for MOSFET #2.
Voltage reference for V
OFF
feedback .
An external resistor sets the DC/DC switching frequency.
Ground return for V
BOOST
DC/DC controller.
NOTE: *VSSB, VSSC, VSSN, VSSP, and PGND (2) are shorted internally to the device substrate.
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