UC1914
UC2914
UC3914
ELECTRICAL CHARACTERISTICS:
Unless otherwise specified, T
A
= 0°C to 70°C for the UC3914, –40°C to 85°C for the
UC2914, and –55°C to 125°C for the UC1914. VCC = 12V, V
PUMP
= V
PUMP
(max), SD = 5V, CP1 = CP2 = C
PUMP
= 0.01µF.
T
A
= T
J
.
PARAMETER
Output Section
OUT High Voltage
OUT High Voltage
OUT Low Voltage
VOUTS = VCC, VPUMP = VPUMP max, with respect to
VPUMP
VOUTS = VCC, VPUMP = VPUMP max, IOUT = –2mA,
with respect to VPUMP
I
OUT
= 0
I
OUT
= 5mA
I
OUT
= 25mA, Overload Condition, VOUTS = 0V
OUT Clamp Voltage
Rise Time
Fall Time
Charge Pump Section
OSC, OSCB Frequency
OSC, OSCB Output High
OSC, OSCB Output Low
OSC, OSCB Output Current Limit
Pump Diode Voltage Drop
PMP Clamp Voltage
VPUMP Maximum Voltage
I
OSC
= –5mA
I
OSC
= 5mA
18.5
–20
0.5
18.5
20
42
0.3
0.25
–15
60
IMAX = OUT, SENSE = VCC, with respect to VCC
IMAX = OUT, SENSE = REF, with respect to REF
SENSE Input Bias
Reference Section
REF Output Voltage
REF Current Limit
Load Regulation
Line Regulation
Shutdown Section
Shutdown Threshold
Input Current
Delay to Output
Fault Section
Fault Output Low
Fault Output Leakage
I
FAULT
= 1mA
V
FAULT
= 35V
100
10
200
500
mV
nA
SD = 5V
(Note 1)
0.6
1.5
150
0.5
2.0
300
2.0
V
µA
µs
I
VREF
= 1mA to 5mA
VCC = 5V to 35V
With respect to VCC
–2.25
12.5
–2.00
20.0
25
25
–1.75
50.0
60
100
V
mA
mV
mV
–20
–20
High Side Only
I
DIODE
= 10mA, Measured from PMP to PMPB, PMPB to
VPUMP
VCC = 25
VCC = 12, VOUTS = VCC, Voltage Where Charge Pump
Disabled
VCC = 35V, VOUTS = VCC, Voltage Where Charge
Pump Disabled
VPUMP Hysteresis
VCC = 12, VOUTS = VCC, Voltage Where Charge Pump
Re-enabled
VCC = 35V, VOUTS = VCC, Charge Pump Re-enabled
Linear Current Section
Input Offset Voltage
Voltage Gain
IMAX Control Voltage
0
80
0
0
1.5
20
20
3.5
15
mV
dB
mV
mV
µA
60
10.0
150
11.0
0.2
20.5
–10
0.9
20.5
22
45
0.7
0.7
250
11.6
0.5
22.5
–3
1.3
22.5
24
48
1.4
1.4
kHz
V
V
V
mA
V
V
V
V
V
V
VOUTS = 0V
C
OUT
= 1nF (Note 1)
C
OUT
= 1nF (Note 1)
11.5
–1.5
–2.0
–1.0
–1.5
0.8
1
1.2
13.0
750
250
1.3
2
1.8
14.5
1250
500
V
V
V
V
V
V
ns
ns
TEST CONDITIONS
MIN
TYP
MAX UNITS
OSC, OSCB Output Clamp Voltage VCC = 25
3
TI [ TEXAS INSTRUMENTS ]
