NTE NTE7107 Integrated circuit switching regulator, 2.5a Datasheet

NTE7107
Integrated Circuit
Switching Regulator, 2.5A
Description:
The NTE7107 is a monolithic power regulator in a 7−Lead Staggered SIP type package delivering
2.5A at a voltage variable from 5V to 40V in step down configuration. Features of this device include
current limiting, soft start, thermal protection, and 0 to 100% duty cycle for continuous operation
mode. Efficient operation at switching frequencies up to 150kHz allows a reduction in the size and
cost of external components.
Features:
D 2.5A Output Current
D 5.1V to 40V Output Voltage Range
D Precise ON−Chip Reference: ± 2%
D High Switching Frequency
D Very High Efficiency: Up to 90%
D Very Few External Components
D Soft Start
D Internal Limiting Current
D Thermal Shutdown
Absolute Maximum Ratings:
Input Voltage, V1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50V
Input to Output Voltatge Difference, V1 − V7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50V
Negative Output DC Voltage, V7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −1V
Negative Output Peak Voltage (t = 0.1µs, f = 100kHz), V7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −5V
Voltage at Pin3 and Pin6, V3, V6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V
Voltage at Pin2, V2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V
Pin3 Sink Current, I3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1mA
Pin5 Source Current, I5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA
Power Dissipation (TC ≤ +90°C), Ptot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15W
Operating Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +150°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +150°C
Maximum Thermal Resistance, Junction−to−Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4°C/W
Maximum Thermal Resistance, Junction−to−Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . 50°C/W
Electrical Characteristics: (TJ = +25°C, Vi = 35V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Vref
−
40
V
Dynamic Characteristics
Output Voltage Range
Vo
Vi = 46V, Io = 1A
Input Voltage Range
Vi
Vo = Vref to 36V, Io = 2.5A
9
−
46
V
Line Regulation
∆Vo
Vi = 10V to 40V, Vo = Vref, Io = 1A
−
15
50
mV
Load Regulation
∆Vo
Vo = Vref, Io = 0.5A to 2A
−
10
30
mV
Internal Reference Voltage (Pin2)
Vref
Vi = 9V to 46V, Io = 1A
5.0
5.1
5.2
V
TJ = 0° to +125°C, Io = 1A
−
0.4
−
mV/°C
−
1.4
3.0
V
Average Temperature Coefficient of
Reference Voltage
∆Vref
∆T
Dropout Voltage
Vd
Io = 2A
Maximum Operating Load Current
Iom
Vi = 9V to 46V, Vo = Vref to 36V
2.5
−
−
A
Current Limiting Threshold (PIn7)
I7L
Vi = 9V to 46V, Vo = Vref to 36V
3.0
−
4.5
A
Input Average Current
ISH
Vi = 46V, Output Short Circuit
−
30
60
mA
f = 100kHz, Io = 2A
Vo = Vref
−
75
−
%
Vo = 12V
−
85
−
%
50
56
−
dB
85
100
115
kHz
Efficiency
Supply Voltage Ripple Rejection
Switching Frequency
η
SVR
∆Vi = 2V, fripple = 100Hz,
Vo = Vref, Io = 1A
f
Voltage Stability of Switching
Frequency
∆f
∆Vi
Vi = 9V to 46V
−
0.5
−
%
Temperature Stability of Switching
Frequency
∆f
∆TJ
TJ = 0 to +125°C
−
1
−
%
Maximum Operating Switching Frequency
fmax
Vo = Vref, Io = 2A
120
150
−
kHz
Thermal Shutdown Junction Temperature
Tsd
−
150
−
°C
−
30
40
mA
0% Duty Cycle
−
15
20
mA
0% Duty Cycle
−
−
1
mA
DC Characteristics
Quiescent Drain Current
Output Leakage Current
I1Q
−I7L
100% Duty Cycle,
Pin5 and Pin7 Open
Vi = 46V
Soft Start
Source Current
I6SO
100
130
150
µs
Sink Current
I6SI
50
70
120
µs
Error Amp
High Level Output Voltage
V3H
V2 = 4.7V, I3 = 100µA
3.5
−
−
V
Low Level Output Voltage
V3L
V2 = 5.3V, I3 = 100µA
−
−
0.5
V
Sink Output Current
I3SI
V2 = 5.3V
100
150
−
µA
−I3SO
V2 = 4.7V
100
150
−
µA
Input Bias Current
I2
V2 = 5.2V
−
2
10
µA
DC Open Loop Gain
Gv
V3 = 1V to 3V
46
55
−
dB
5
−
−
mA
Source Output Current
Oscillator
Oscillator Source Current
−I5
Pin Connection Diagram
(Front View)
7 Output
6 Soft Start
5 OSC
T
A
B
4 GND/Tab
3 Frequency Comp
2 Feedback Input
1 Input
.189 (4.8)
.410 (10.42)
.054 (1.38)
.237
(6.0)
.666
(16.9)
.152 (3.93)
Dia
1
.622
(15.8)
7
.890
(22.6)
.300(7.62)
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