MC34152, MC33152,NCV33152High Speed Dual MOSFET Drivers
The MC34152/MC33152 are dual noninverting high speed drivers specifically designed for applications that require low current digital signals to drive large capacitive loads with high slew rates. The devices feature low input current making them CMOS/LSTTL logic compatible, input hysteresis for fast output switching that is independent of input transition time, and two high current totem pole outputs ideally suited for driving power MOSFETs. Also included is an undervoltage lockout with hysteresis to prevent system erratic operation at low supply voltages.
Typical applications include switching power supplies, dc−to−dc converters, capacitor charge pump voltage doublers/inverters, and motor controllers.
This device is available in dual−in−line and surface mount packages.
Features
•Pb−Free Packages are Available
•Two Independent Channels with 1.5 A Totem Pole Outputs •Output Ri and Fall Times of 15 ns with 1000 pF Load •CMOS/LSTTL Compatible Inputs with Hysteresis •Undervoltage Lockout with Hysteresis •Low Standby Current
•Efficient High Frequency Operation
•Enhanced System Performance with Common Switching Regulator Control ICs
•
NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes
Figure 1. Reprentative Diagram
Logic Input A Logic Input B PDIP−8P SUFFIX CASE 626
MARKING
DIAGRAMS
1
8
MC3x152P AWL YYWW
贪赃枉法的意思>职场必备SOIC−8D SUFFIX CASE 751
1
x = 3 or 4
A = Asmbly Location WL, L = Wafer Lot YY , Y = Year
WW, W
= Work Week
PIN CONNECTIONS
工地安全标语N.C.N.C.(T op View)
Drive Output A Logic Input A V CC
GND Drive Output B
Logic Input
See detailed ordering and shipping information in the package dimensions ction on page 2 of this data sheet.
ORDERING INFORMATION
MAXIMUM RATINGS
(not normal operating conditions) and are not valid simultaneously. If the limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected.
1.For optimum switching speed, the maximum input voltage should be limited to 10 V or V CC, whichever is less.
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2.Maximum package power dissipation limits must be obrved.
ORDERING INFORMATION
Specifications Brochure, BRD8011/D.
*NCV prefix is for automotive and other applications requiring site and change control.
ELECTRICAL CHARACTERISTICS (V CC = 12 V, for typical values T A = 25°C, for min/max values T A is the operating ambient temperature range that applies [Note 3], unless otherwi noted.)
师徒关系
T low = 0°C for MC34152, −40°C for MC33152, −40°C for MC33152V
T high = +70°C for MC34152, +85°C for MC33152, +125°C for MC33152V
NCV33152: T low = −40°C, T high = +125°C. Guaranteed by design.
I i n , I N P U T C U R R E N T (m A )Figure 6. Drive Output High to Low Propagation Delay versus Logic Input Overdrive Voltage Figure 7. Drive Output Low to High Propagation Delay versus Logic Input Overdrive Voltage
t P L H (I n /, D R I V E O U T P U T P R O P A G A T I O N D E L A Y (n s )
V in , INPUT OVERDRIVE VOLTAGE BELOW LOWER THRESHOLD (V)
t P H L (I n /V in , INPUT OVERDRIVE VOLTAGE ABOVE UPPER THRESHOLD (V)
s a t V , O U T P U T S A T U R A T I O N V O L T A G E (V )
Figure 8. Propagation Delay
Figure 9. Drive Output Clamp Voltage
versus Clamp Current
50 ns/DIV
2.01.0−1.0
I O , OUTPUT CLAMP CURRENT (A)
c l a m p V
Figure 10. Drive Output Saturation Voltage
versus Load Current Figure 11. Drive Output Saturation Voltage
买二送一是打几折versus Temperature
−1.0
− 2.0− 3.03.02.01.000
0.2
0.4
螃蟹清洗0.6
0.8
1.0
1.2
1.4
I O , OUTPUT CLAMP CURRENT (A)T A , AMBIENT TEMPERATURE (°C)
Figure 12. Drive Output Ri Time Figure 13. Drive Output Fall Time
10 ns/DIV 10 ns/DIV
90% −
10% −
90% −10% −
90% −
10% −
V CC = 12 V
V in = 0 V to 5.0 V C L = 1.0 nF T A = 25°C
Drive Output
Logic Input V CC = 12 V
V in = 0 V to 5.0 V C L = 1.0 nF T A = 25°C
V CC = 12 V
V in = 0 V to 5.0 V C L = 1.0 nF T A = 25°C
, O U T P U T C L A M P V O L T A G E (V )
I C C , S U P P L Y C U R R E N T (m A )
I C C , S U P P L Y C U R R E N T (m A )
Figure 14. Drive Output Ri and Fall Time
versus Load Capacitance
Figure 16. Supply Current versus Input Frequency Figure 17. Supply Current versus Supply Voltage
C L , OUTPUT LOA
D CAPACITANC
E (nF)
−t f , O U T P U T R I S E -F A L L T I M E (n s )
80
6040
20
t r 80
60
40
20
80604020
I C C , S U P P L Y C U R R E N T (m A )
f, INPUT FREQUENCY (Hz)
V CC , SUPPLY VOLTAGE (V)
APPLICATIONS INFORMATION
Description
The MC34152 is a dual noninverting high speed driver specifically designed to interface low current digital circuitry with power MOSFETs. This device is constructed with Schottky clamped Bipolar Analog technology which offers a high degree of performance and ruggedness in hostile industrial environments.
Input Stage
The Logic Inputs have 170 mV of hysteresis with the input threshold centered at 1.67 V . The input t
hresholds are innsitive to V CC making this device directly compatible with CMOS and LSTTL logic families over its entire operating voltage range. Input hysteresis provides fast output switching that is independent of the input signal transition time, preventing output oscillations as the input thresholds are crosd. The inputs are designed to accept a signal amplitude ranging from ground to V CC . This allows the output of one channel to directly drive the input of a cond channel for master−slave operation. Each input has a 30 k W pulldown resistor so that an unconnected open input will cau the associated Drive Output to be in a known low state.
Output Stage
Each totem pole Drive Output is capable of sourcing and sinking up to 1.5 A with a typical ‘on’ resistance of 2.4 W at 1.0A. The low ‘on’ resistance allows high output currents to be attained at a lower V CC than with comparative CMOS drivers. Each output has a 100 k W pulldown resistor to keep the MOSFET gate low when V CC is less than 1.4 V . No over current or thermal protection has been designed into the device, so output shorting to V CC or ground must be avoided.
Parasitic inductance in ries with the load will cau the driver outputs to ring above V CC during the turn−on transition, and below ground during the turn−off transition.With CMOS drivers, this mode
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of operation can cau a destructive output latchup condition. The MC34152 is immune to output latchup. The Drive Outputs contain an internal diode to V CC for clamping positive voltage transients. When operating with V CC at 18 V , proper power supply bypassing must be obrved to prevent the output ringing from exceeding the maximum 20 V device rating.Negative output transients are clamped by the internal NPN pullup transistor. Since full supply voltage is applied across
