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33998

Features: • Operating Voltage Range 6.0 V up to 26.5 V (40 V transient)• Step-Down Switching Regulator Output VDDH = 5.0 V @ 1400 mA (total)• Linear Regulator with External Pass Transistor VDDL = 2.6 V @ 400 mA• Low-Power Standby Linear Regulator VKAM = 2.6 V @ 10 mA•...

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SeekIC No. : 004228622 Detail

33998: Features: • Operating Voltage Range 6.0 V up to 26.5 V (40 V transient)• Step-Down Switching Regulator Output VDDH = 5.0 V @ 1400 mA (total)• Linear Regulator with External Pass Tr...

33998 Data Sheet

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Part Number:
33998
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/20

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Product Details

Description



Features:

• Operating Voltage Range 6.0 V up to 26.5 V (40 V transient)
• Step-Down Switching Regulator Output VDDH = 5.0 V @ 1400 mA (total)
• Linear Regulator with External Pass Transistor VDDL = 2.6 V @ 400 mA
• Low-Power Standby Linear Regulator VKAM = 2.6 V @ 10 mA
• Two 5.0 V @ 200 mA (typical) Sensor Supplies VREF Protected Against Short-to-Battery and Short-to-Ground with Retry Capability
• Undervoltage Shutdown on the VDDL, VDDH Outputs with Retry Capability
• Reset Signals
• Power-Up Delay
• Enable Pins for Main Supplies (EN) and Sensor Supplies (SNSEN)
• Power Sequencing for Advanced Microprocessor Architectures
• Pb-Free Packaging Designated by Suffix Code EG



Pinout

Connection Diagram


Specifications

Rating
Symbol
Value
Unit
Main Supply Voltage
VPWR
-0.3 to 45
V
Keep-Alive Supply Voltage
KA_VPWR
-0.3 to 45
V
Switching Node
VSW
-0.3 to 45
V
5.0 V Input Power

VDDH
-0.3 to 6.0
V
Sensor Supply
VREF1
VREF2
-0.3 to 18
-0.3 to 18
V
Keep-Alive Supply Voltage
VKAM
-0.3 to 6.0
V
Maximum Voltage at Logic I/O Pins
EN
SNSEN
PWROK
VKAMOK
-0.3 to 6.0
-0.3 to 6.0
-0.3 to 6.0
-0.3 to 6.0
V
Charge Pump Reservoir Capacitor Voltage
CRES
-0.3 to 18
V
Error Amplifier Summing Node
VSUM
-0.3 to 6.0
V
Switching Regulator Output Feedback
FBKB
-0.3 to 6.0
V
VDDL Base Drive
DRVL
-0.3 to 6.0
V
VDDL Feedback
FBL
-0.3 to 6.0
V
ESD Voltage
Human Body Model (all pins) (1)
Machine Model (all pins) (1)
VESD1
VESD2
±500
±100
V
Power Dissipation (TA = 25°C) (2)
PD
800
mW
Thermal Resistance, Junction to Ambient (3), (4)
RJA
60
°C/W
Thermal Resistance, Junction to Board (5)
RJB
20
°C/W
Operational Package Temperature [Ambient Temperature] (6)
TA
-40 to 125
°C



Description

The 33998 is a medium-power, multi-output power supply integrated circuit that is capable of operating over a wide input voltage range, from 6.0 V up to 26.5 V with 40 V transient capability. It incorporates a sensorless current mode control step-down switching controller regulating directly to 5.0 V. The 2.6 V linear regulator uses an external pass transistor to reduce the 33998 power dissipation. The 33998 also provides a 2.6 V linear standby regulator and two 5.0 V sensor supply outputs protected by internal lowresistance LDMOS transistors.

There are two separate enable pins for the main and sensor supply outputs and standard supervisory functions such as resets with power-up reset delay.

The 33998 provides proper power supply sequencing for advanced microprocessor architectures such as the MPC5xx and 683xx microprocessor families.




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