4
FN9198.4
April 17, 2009
POSITIVE (V
ON
) CHARGE PUMP
V
ON
V
ON
Output Voltage Range 2X or 3X Charge Pump VSUP+
2V
34 V
ILoad_PCP_min External Load Driving Capability V
ON
= 25V (2X Charge Pump) 20 mA
V
ON
= 34V (3X Charge Pump) 20 mA
Ron(VSUP_SW) ON Resistance of V
SUP
Input Switch I(switch) = +40mA 10 17
Ron(C1/2-)H High-Side Driver ON-Resistance at
C1- and C2-
I(C1/2-) = +40mA 30
Ron(C1/2-)L Low-Side Driver ON-Resistance at
C1- and C2-
I(C1/2-) = -40mA 4 7
Ipu(VSUP_SW) Pull-Up Current Limit in V
SUP
Input
Switch
V(C2+) = 0V to V(SUP) - 0.4V - V(diode) 40 100 mA
Ipu(C1/2-) Pull-Up Current Limit in C1- and C2- V(C1/2-) = 0V to V(VSUP) - 0.4V 40 100 mA
Ipd(C1/2-) Pull-Down Current Limit in C1- and C2- V(C1/2-) = 0.2V to V(VSUP) -100 -40 mA
I(POUT)leak Leakage Current in P
OUT
EN = LOW -5 5 µA
V
FBP
FBP Regulation Voltage T
A
= +25°C 1.176 1.2 1.224 V
1.172 1.2 1.228 V
ACCP V
ON
Output Accuracy I
ON
= 1mA, T
A
= +25°C -2 +2 %
D_PCP_max Max Duty Cycle of the Positive Charge
Pump
50 %
V(diode) Internal Schottky Diode Forward Voltage I(diode) = +40mA 700 800 mV
ENABLE INPUTS
VHI-EN Enable “HIGH” 2.2 V
VLO_EN Enable “LOW” 0.8 V
IEN_pd Enable Pin Pull-Down Current V
EN
> VLO_EN 25 µA
VHI-ENL Logic Enable “HIGH” 2.2 V
VLO-ENL Logic Enable “LOW” 0.8 V
IENL_pd Logic Enable Pin Pull-Down Current V
ENL
> VLO_ENL 25 µA
V
ON
SLICE POSITIVE SUPPLY = V(POUT)
I(POUT)_slice V
ON
Slice Current from P
OUT
Supply CTL = VDD, sequence complete 200 400 µA
CTL = AGND, sequence complete 100 150 µA
RON(POUT-COM) ON-Resistance between P
OUT
- COM CTL = VDD, sequence complete 5 10
RON(DRN-COM) ON-Resistance between DRN - COM CTL = ACGND, sequence complete 30 60
RON_COM ON-Resistance between COM and
PGND3
200 500 1500
VLO CTL Input LOW Voltage 0.8 V
VHI CTL Input HIGH Voltage 2.2 V
FAULT DETECTION THRESHOLDS
T_off Thermal Shut-Down (latched and reset
by power cycle or EN cycle)
Temperature rising 150 °C
Vth_A
VDD
(FBB) A
VDD
Boost Short Detection V(FBB) falling less than 0.9 V
Electrical Specifications V
IN
= 12V, V
BOOST
= V
SUP
= 15V, V
ON
= 25V, V
OFF
= -8V, over-temperature from -40°C to +105°C, unless
otherwise stated. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise
specified. Temperature limits established by characterization and are not production tested. (Continued)
PARAMETER DESCRIPTION CONDITIONS MIN TYP MAX UNIT
ISL97650
