TC1220ECHTR Microchip Technology, TC1220ECHTR Datasheet - Page 4

• Manufacturer Part Number: TC1220ECHTR
• Description: IC CHARGE PUMP CONV SD SOT23A-6
• Manufacturer: Microchip Technology
• Type: Switched Capacitor (Charge Pump), Doubler, Invertingr

Specifications of TC1220ECHTR

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: -2.5 ~ -5.5 V, ±5 ~ ±11 V
• Current - Output: 25mA
• Frequency - Switching: 35kHz
• Voltage - Input: 2.5 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-6
• Power - Output: 240mW
• Primary Input Voltage: 5.5V
• No. Of Outputs: 1
• Output Current: 25mA
• No. Of Pins: 6
• Operating Temperature Range: -40°C To +85°C
• Peak Reflow Compatible (260 C): Yes
• Switching Frequency Max: 35kHz
• Function: Inverting, Step Up
• Output Voltage: - 2.5 V to - 5.5 V, 5 V to 11 V
• Maximum Operating Temperature: 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

TC1219/TC1220
3.0
The TC1219/TC1220 charge pump converters invert
the voltage applied to the V
of a two-phase operation (Figure 3-1). During the first
phase, switches S2 and S4 are opened and S1 and S3
are closed. During this time, C1 charges to the voltage
on V
second phase, S2 and S4 are closed, and S1 and S3
are opened. This action connects C1 across C2,
restoring charge to C2.
DS21366B-page 4
IN
and load current is supplied from C2. During the
DETAILED DESCRIPTION
IN
pin. Conversion consists
FIGURE 3-1:
V
IN
OSC
S3
S1
C1
IDEAL SWITCHED
CAPACITOR CHARGE
PUMP
Phase 1
 2002 Microchip Technology Inc.
S4
S2
C2
TC1219/1220
V
OUT
= – (V
IN
)