5A Constant Frequency Hysteretic Synchronous Regulator
4
Block Diagram
PWM Logic
OCP
5VREG
VCC
COMP
FB
RT
GND
HICCUP
Set
OSC
VCC UVLO
5V LDO
VIN
BST
D1
S1
SW
Soft start
Ramp
+
-
OCP
Gate
Control
Logic
S2
D2
0.3V
+
0.56V
FB
+
Bias Generator
0.8V(REF)
1.25V
Thermal
Shutdown
Figure 3 · Simplified Block Diagram of NX9415
Absolute Maximum Ratings
5
Absolute Maximum Ratings
Note: 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.
Parameter
Min Max Units
5VREG,VCC to GND & BST to SW voltage -0.3 6.5
V
VIN to GND Voltage - 25
V
S1 to GND -2 30 V
D1 to S1, D2 to S2 - 30 V
All other pins -0.3 VCC+0.3, or 6.5
V
Storage Temperature Range -65 150
°C
Operating Junction Temperature Range -40 125 °C
Peak Reflow Temperature (40 seconds) 260 (+0, -5) °C
ESD Susceptibility 2
kV
Power Dissipation Internally Limited by OTP
Thermal Properties
Thermal Resistance Typ Units
θ
JA
30 °C/W
θ
JC
2.5 °C/W
Note: The θ
JA
numbers assume no forced airflow. Junction Temperature is calculated using T
J
= T
A
+ (PD x θ
JA
). In
particular, θ
JA
is a function of the PCB construction. The stated number above is for a four-layer board in
accordance with JESD-51 (JEDEC).
Electrical Characteristics
Unless otherwise specified, these specifications apply over VIN = 12V, and T
A
= 0 to 70°C.
Following are the bypass capacitors: C
VIN
= 1µF, C
5VREG
= 4.7µF, and all X5R ceramic capacitors.
Typical values refer to T
A
= 25°C. Low duty cycle pulse testing is used which keeps junction and
case temperatures equal to the ambient temperature.
Symbol Parameter Test Condition Min Typ Max Units
Reference Voltage
VREF Ref Voltage 0.8 V
Ref Voltage line regulation VIN= 9V to 22V 0.4 %
5VREG
5VREG Voltage range 4.75 5 5.25 V
5VREG Line Regulation VIN= 9V to 22V 10 mV
5VREG Max Current 50 mA
5A Constant Frequency Hysteretic Synchronous Regulator
6
Electrical Characteristics - continued
Unless otherwise specified, these specifications apply over VIN = 12V, and T
A
= 0 to 70°C.
Following are the bypass capacitors: C
VIN
= 1µF, C
5VREG
= 4.7µF, and all X5R ceramic capacitors.
Typical values refer to T
A
= 25°C. Low duty cycle pulse testing is used which keeps junction and
case temperatures equal to the ambient temperature.
Symbol Parameter Test Condition Min Typ Max Units
Supply Voltage (VIN)
VIN VIN Voltage Range 9 22 V
Input Voltage Current
(Static)
No switching
4.8
mA
Input Voltage Current
(Dynamic)
R
RT
= 4.22k 10 mA
VIN UVLO
VIN_UVLO VIN-Threshold V
IN
Rising 6.5 V
VIN_Hyst VIN-Hysteresis V
IN
Falling 0.6 V
Under Voltage Lockout
VCC
_UVLO
VCC Threshold VCC Rising 3.9 V
VCC
_Hyst
VCC Hysteresis VCC Falling 0.2 V
SS
T
ss
Soft Start time F
S
= 2.2MHz 400 µs
Oscillator (RT)
F
S
Frequency
R
RT
= 4.22k 2250 kHz
V
RAMP
Ramp Amplitude Voltage
1.5 V
Max Duty Cycle F
S
= 2.2MHz 71 %
Min Controllable On Time 150 ns
Error Amplifiers
Transconductance 2000 µmho
I
B
Input Bias Current 10 nA
COMP SD Threshold 0.3 V
FBUVLO
Feedback UVLO threshold 0.6 V
Over temperature
Threshold
150 °C
Hysteresis 20 °C
OCP
OCP current
37 µA
Internal Schottky Diode
Forward voltage drop
Forward current = 20mA 350 mV
Output Stage
High Side MOSFET
RDSON
31
m
Low Side MOSFET
RDSON
31
m
Output Current
5
A

NX9415CMTR

Mfr. #:
Manufacturer:
Microchip / Microsemi
Description:
Switching Voltage Regulators Switching Regulator
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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