CALLM FA7616CV, FA7616CP, FA7616CE Datasheet

FA7616CP(E)(V)

1

■ Description

The FA7616CP(E)(V) is a bipolar control IC having two
channels of PWM-type switching regulator control circuits.
With this IC, a DC-to-DC converter can be easily implemented
for a minimum input voltage of 1.4V.

■ Features

• Input voltage from 1.4V (VCC = 1.4 to 12V)

• Open-collector output

• Wide operating frequency range (f

OSC: 10 to 500kHz)

• Output ON/OFF control function

• Not many external discrete components are needed

■ Applications

• Battery power supply (two, 1.5V batteries) for portable
equipment

■ Dimensions, mm

Á TSSOP-16

1

8

9

16

0.6

0~10˚

0.65

6.4

±0.2

4.4

±0.1

5.0

±0.1

0.1

±0.1

0.15

+0.05

–0.06

0.24

+0.08
–0.07

1.2max

Á SSOP-16

1

8

9

16

0.6

0~10˚

0.65

7.9

±0.3

5.3

6.2

0.1

±0.1

0.2

+0.1

–0.05

0.3

2.1max

Á DIP-16

1

16

9

8

19.4

6.5

7.6

3.4

4.3max

1.5

0.81

3.1min

0.2min

0~15˚

0~15˚

0.5

±0.1

2.54

±0.25

0.3

+0.1

–0.05

■ Block diagram

FA7616CP(E)(V)

Bipolar IC

For Switching Power Supply Control

Pin Pin Description
No. symbol

1 VCC2 IC main power supply
2 CT Oscillator timing capacitor
3 IN2 (+) Non-inverting input to error

amplifier

4 IN2 (–) Inverting input to error amplifier
5 FB2 Error amplifier output
6 DT2 Dead time adjustment
7 OUT2 CH. 2 Output
8 GND Ground
9 OUT1 CH. 1 Output
10 DT1 Dead time adjustment
11 FB1 Error amplifier output
12 IN1 (–) Inverting input to error amplifier
13 CST Start-up circuit timing capacitor
14 VCC1 Start-up circuit power supply
15 ON/OFF Output ON/OFF control
16 REF

Reference voltage output (1.20V)

FA7616CP(E)(V)

2

■ Electrical characteristics (Ta = 25°C, VCC1 = 1.6V, VCC2 = 3V, V15 = 2V, CT = 1000pF, RT = 10kΩ)
Reference voltage section

Item Symbol Test condition Min. Typ. Max. Unit

Output voltage VREF IOR = 0.1mA 1.196 1.220 1.244 V
Line regulation LINE

V

CC

= 2.5 to 12V, V15 = 2V fixed

18mV

Load regulation LOAD IOR = 0.1 to 1mA 1 8 mV
Output voltage variation due to temperature change VTC1 Ta = –20 to +25°C –2 –0.3 1 %

IOR = 0.1mA

VTC2 Ta = +25 to +85°C –2 –0.6 1 %

IOR = 0.1mA

Oscillator section

Item Symbol Test condition Min. Typ. Max. Unit

Oscillation frequency fOSC CT = 1000pF, RT = 10kΩ 80 92 110 kHz
Frequency variation 1 (due to supply voltage change) fdV VCC = 2.5 to 12V 1 3 %
Frequency variation 2 (due to temperature change) fdT Ta = –20 to +85°C2%

Error amplifier section

Item Symbol Test condition Min. Typ. Max. Unit

Input offset voltage VIO 210mV
Input bias current IB 1

µ

A

Common-mode input voltage VCM 0

V

CC2

–1.7

V

Open-loop voltage gain AV 70 dB
Unity-gain bandwidth GB 1.0 MHz
Maximum output voltage VOM+ RNF = 100kΩ

V

CC2

–0.5

V

VOM– RNF = 100kΩ 200 mV

Output source current IOM+ VOM = 1V 40 85 170

µ

A

PWM comparator section

Item Symbol Test condition Min. Typ. Max. Unit

Input threshold voltage VTH0 Duty cycle = 0% 0.80 V
Input threshold voltage VTH100 Duty cycle = 100% 1.45 V

■ Absolute maximum ratings

Item Symbol Rating Unit

Supply voltage VCC 12 V
Reference voltage output current

IOR 5mA

Output sink current IO 10 mA
Total power dissipation Pd 300 mW
Operating temperature Topr –20 to +85 °C
Storage temperature Tstg –40 to +150 °C

■ Recommended operating conditions

Item Symbol Min. Max. Unit

Supply voltage 1 VCC1 1.4 12 V
Supply voltage 2 VCC2 2.5 12 V
Output sink current (at start-up) ISINK 3mA
Output sink current ISINK 5mA

(at steady state)
Oscillation frequency fOSC 10 500 kHz
Oscillator timing capacitor CST 47 10,000 pF

(start-up circuit)
Oscillator timing capacitor CT 220 10,000 pF
Oscillator timing resistance RT 4.7 47 kΩ
Feedback resistance RNF 100 kΩ