CS1MP1, CS2001, CS2001T Selling Leads, Datasheet
MFG:RichTek Package Cooled:SOP-20 D/C:08+
CS1MP1, CS2001, CS2001T Datasheet download
Part Number: CS1MP1
MFG: RichTek
Package Cooled: SOP-20
D/C: 08+
CS1MP1, CS2001, CS2001T
- Table of contents:
Info of CS1MP1
Info of CS2001
Info of CS2001T
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About cs1000
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Datasheet: cs1000
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About CS2001
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Datasheet: CS2001
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About CS20
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Datasheet: CS20
File Size: 260255 KB
Manufacturer: IXYS [IXYS Corporation]
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CS2001 General Description
The CS2001 is a smart power supply ASIC utilized in automotive airbag systems. It contains a currentmode switching regulator with a 1.2 A onchip switch and a 5.0 V, 100 mA linear regulator. The linear output capacitor must be 3.3 mF or greater with an ESR in the range of 100 mW to 1.0 W. If the ESR of the cap is less than 100 mW, a series resistor must be used. The switcher can be configured in either a boost or flyback topology. The boost topology produces energy reserve voltage VER which is externally adjustable (25 V maximum) through the resistor divider connected to the VFB pin. In the event of fault conditions that produce VFB either open or shorted, the switcher is shut down.
Under normal operating conditions (VBAT > 8.0 V), the current loading on the linear regulator is directed through VBAT. A low battery or loss of battery condition switches the supply for the linear regulator from VBAT to VER and shuts down the switcher using the ASIC's internal "smartswitch." This switchover feature minimizes the power dissipation in both the linear and switcher output devices and saves the cost of using a larger inductor.
The NERD (No Energy Reserve Detected) pin is a dual function output. If VOUT is not in regulation, it provides a Power On Reset function whose time interval is externally adjustable with the capacitor. This interval can be seen on the RESETB pin, which allows for clean powerup and powerdown of the microprocessor. Once VOUT is in regulation, the logic level of the NERD output (usually low) indicates to the microprocessor whether or not the VER pin is connected.
A switchedcapacitor voltage tripler accepts input voltage VER and produces output voltage VCHG (typically VER + 8.0 V). This voltage is used in the system to drive highside FETs.This part is capable of withstanding a 50 V peak transient voltage.The linear regulator will not shut down during this event.
CS2001 Maximum Ratings
|
Rating |
Value |
Unit |
| VBAT |
0.5 to 25 |
V |
| VER |
0.5 to 25 |
V |
| VOUT |
0.5 to 7.0 |
V |
| Digital Input/Output Voltage |
0.5 to 7.0 |
V |
| Peak Transient Voltage (36 V Load Dump @14V Battery Voltage) |
50 |
V |
| Storage Temperature Range |
55 to 150 |
°C |
| Junction to Free Air Thermal Impedance |
55 |
°C/W |
| ESD Susceptibility (Human Body Model) |
4.0 |
KV |
| Lead Temperature Soldering: Reflow:(SMD styles only)(Note1.) |
260 peak |
°C |
| TA |
40 to 85 |
°C |
| TJ |
40 to 150 |
°C |
*The maximum package power dissipation must be observed.
CS2001 Features
• Linear Regulator 5.0 V ±2% @ 100 mA
• Switching Regulator 1.2 A Peak Internal Switch
• Voltage Tripler
• Smart Functions
Smartswitch
RESET
Energy Reserve Status
• Protection
Overtemperature
Current Limit
50 V Peak Transient Capability
• Internally Fused Leads in SO20L Package
• Switching Regulator 1.2 A Peak Internal Switch
• Voltage Tripler
• Smart Functions
Smartswitch
RESET
Energy Reserve Status
• Protection
Overtemperature
Current Limit
50 V Peak Transient Capability
• Internally Fused Leads in SO20L Package
CS2001 Connection Diagram
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