Panasonic AN8013SH Datasheet

Voltage Regulators

AN8013SH

Single-channel step-up or step-down
DC-DC converter control IC

■ Overview

The AN8013SH is a single-channel PWM DC-DC
converter control IC. This IC implements DC-DC con­verters that provide a single arbitrary output voltage that
is either a stepped-up or stepped-down level. It features a
wide operating supply voltage range, low power, and a
built-in overcurrent protection circuit to protect the
switching transistor from damage or destruction. The
AN8013SH is provided in a 0.5 mm pitch 10-pin surface
mounting package and is optimal for use in miniature
high-efficiency portable power supplies.

0.5±0.2

Unit: mm

1

5

0.5

0.1±0.1

4.3±0.30

6.3±0.30

10

0.2±0.1

6

0.625±0.100.625±0.10

+0.1

–0.05

0.15

3.0±0.30

1.5±0.2

■ Features

• Wide operating supply voltage range (3.6 V to 34 V)

• Small consumption current (2.4 mA typical)

• Supports control over a wide output frequency range:

20 kHz to 500 kHz.

• Built-in pulse-by-pulse overcurrent protection circuit

(Detection voltage: V

− 100 mV)

CC

• Built-in timer latch short-circuit protection circuit

■ Pin Descriptions

CLM
RT
CT
S.C.P.
DTC

(charge current 1.3 µA typical)

• Incorporating the under-voltage lock-out (U.V.L.O.) circuit

• Built-in reference voltage circuit (Error amplifier reference input: 0.75 V (allowance: ±4%))

• Output block is open-collector (darlington) type.

• High absolute maximum rating of output current (100 mA)

• Duty ratio with small sample-to-sample variations (55% ± 5%).

• Adopts a 0.5-mm lead pitch 10-pin small outline package

SSOP010-P-0225

1
2
3
4
5

■ Applications

• Switching mode power supply units (in portable equipment and other applications)

10

V

CC

9

Out

8

GND

7

IN−

6

FB

1

AN8013SH Voltage Regulators

■ Block Diagram

CC

FB

IN−

V

6

Error amp.

7

V

10

REF

0.75 V

0.1 V

CLM

1

S.C.P. comp.

1.90 V

DTC

5

V

REF

R

S R
Latch

V

REF

R

T

4

S.C.P.

T

0.75 V

V

REF

S R
Latch

PWM

R
S Q
U.V.L.O.

CT3RT

2

OSC

9

Out

8

GND

■ Absolute Maximum Ratings at Ta = 25°C

Parameter Symbol Rating Unit

Supply voltage V
CLM pin allowable application voltage V
Error amplifier allowable input voltage V
DTC pin allowable input voltage V
Out pin allowable application voltage V
Collector output current I
Power dissipation (Ta = 85°C) P
Operating ambient temperature T
Storage temperature T

CC

CLM

IN−

DTC

OUT

OUT

D

opr

stg

35 V
35 V

−0.3 to +2.5 V

2.5 V
35 V

100 mA
154 mW

−30 to +85 °C

−55 to +150 °C

■ Recommended Operating Range at Ta = 25°C

Parameter Symbol Min Max Unit

Supply voltage rise time (0 to 3.6 V) tr (VCC)10 µs
Collector output voltage V
Collector output current I
Timing capacitance C
Timing resistance R
Oscillator frequency f
Short-circuit protection time constant setting C

capacitor

OUT

OUT

T

T

OUT

SCP

 34 V
 50 mA

100 1 800 pF

5.1 15 kΩ

20 500 kHz

1 000  pF

2

Voltage Regulators AN8013SH

■ Electrical Characteristics at Ta = 25°C

Parameter Symbol Conditions Min Typ Max Unit

U.V.L.O. block

Circuit operation start voltage V
Hysteresis width V

UON

HYS

Error amplifier block

Input threshold voltage V
Line regulation with input fluctuation V

Voltage follower 0.72 0.75 0.78 m V

TH

Voltage follower,  28mV

dv

VCC = 3.6 V to 34 V
Input bias current I
High-level output voltage V
Low-level output voltage V
Input threshold voltage temperature V

B

EH

EL

Voltage follower, ±1  %

dt1

characteristics 1 Ta = −30°C to +25°C
Input threshold voltage temperature V

Voltage follower, ±1  %

dt2

characteristics 2 Ta = −25°C to +85°C
Output sink current I
Output source current I

SOURCEVFB

Open-loop gain A

VFB = 0.9 V  8  mA

SINK

= 0.9 V −120 µA

V

PWM Comparator Block

Input threshold voltage: high V
Input threshold voltage: low V
Input current I

Duty: 100% 1.2  V

DT-H

Duty: 0% 0.6 V

DT-L

DTC

Output block

Oscillation frequency f
Output duty Du R
Output saturation voltage V
Output leak current I
RT pin voltage V
Maximum oscillation frequency f

OUT(max)RT

Frequency supply voltage f

RT = 15 kΩ, CT = 150 pF 185 205 225 kHz

OUT

= 91 kΩ 50 55 60 %

DTC

OLIO

LEAKVCC

RT

= 50 mA, RT = 15 kΩ0.9 1.2 V

= 34 V, when output Tr is off 10 µA

= 5.1 kΩ, CT = 120 pF  500  kHz

f

dV

= 200 kHz, ±1  %

OUT

characteristics VCC = 3.6 V to 34 V
Frequency temperature f

dT1fOUT

characteristics 1
Frequency temperature f

dT2fOUT

characteristics 2

Note)

At VCC = 12 V, RT = 15 kΩ, CT = 15 pF, unless otherwise specified.

= 200 kHz,

Ta = −30°C to +25°C

= 200 kHz,

Ta = 25°C to 85°C

2.8 3.1 3.4 V

100 200 300 mV

−500 −25  nA

2.0  V

0.3 V

 70  dB

−12 −11 −10 A

 0.59  V

±3  %

±3  %

3

V

CC

CLM
comp.

50 µA50 µA

0.1 V

1

AN8013SH Voltage Regulators

■ Electrical Characteristics at Ta = 25°C (continued)

Parameter Symbol Conditions Min Typ Max Unit

Short-circuit protection circuit block

Input threshold voltage V
Input standby voltage V
Input latch voltage V
Charge current I
Comparator threshold voltage V

THPC

STBY

IN

CHG

THL

V

= 0 V −1.6 −1.3 − 1.0 µA

SCP

Overcurrent Protection Block

Input threshold voltage V
Delay time t

CLM

DLY

Whole device

Total consumption current 1 I
Total consumption current 2 I

Note)

At VCC = 12 V, RT = 15 kΩ, CT = 15 pF, unless otherwise specified.

RT = 15 kΩ2.4 3.5 mA

CC

RT = 5.1 kΩ, CT = 150 pF 3.4mA

CC2

■ Terminal Equivalent Circuits

Pin No. Pin I/O Function Internal equivalent circuit

1 CLM I Detects the overcurrent state in switching

transistor.
Insert a resistor with a low resistance between
this pin and V
When this pin falls to a level 100 mV or more
lower than VCC, the PWM output is turned off
for that period thus narrowing the width of
the on period.
(This implements a pulse-by-pulse
overcurrent protection technique.)

2 RT I Connection for the timing resistor that deter-

mines the oscillator frequency.
Use a resistor in the range 5.1 kΩ to 15 kΩ.
Thus the pin voltage will be about 0.59 V.

3 CT O Connection for the timing capacitor that

determines the oscillator frequency.
Use a capacitor in the range 100 to 1 800 pF.
See the "Application Notes, [2] and [3]"
sections later in this document for details on
setting the frequency. Use an oscillator
frequency in the range 20 kHz to 500 kHz.

to detect overcurrent states.

CC

V

V

To PWM input

0.70 0.75 0.80 V

120 V
120 mV

 1.90  V

VCC − 120 VCC − 100 VCC − 80

 200  ns

REF

100 Ω

RT (V ≈ 0.59 V)

2

REF

OSC
comp.

OSC PWM

S.C.P.

mV

DTC

2I

I

O

3

O

4

Voltage Regulators AN8013SH

■ Terminal Equivalent Circuits (continued)

Pin No. Pin I/O Function Internal equivalent circuit

4 S.C.P. O Connection for the capacitor that determines

the time constant for soft start and the timer
latch short-circuit protection circuit.
Use a capacitor with a value of 1 000 pF or
higher.
The charge current I

is determined by the

CHG

timing resistor RT, and sample-to-sample and
temperature variations can be suppressed.
When R

is 15 kΩ, the current will be about

T

−1.3 µA.

I

CHG

V

=

R

RT

1

×

[A]

30

T

5 DTC I Connection for the resistor and capacitor that

determine the PWM output dead-time and the
soft start period.
The input current I

is determined by the

DTC

timing resistor RT, and sample-to-sample and
temperature variations can be suppressed.
When R

is 15 kΩ, the current will be about

T

−11 µA.

I

CHG

V

=

R

RT

1

×

[A]

3.6

T

6 FB O Error amplifier output

A source current is about −120 mA and a sink
current is about 8 mA.
Correct the gain and the phase frequency
characteristics by inserting a resistor and a
capacitor between this pin and IN−pin.

7IN− I Error amplifier inverting input

For common-mode input, use in the range

− 0.1 V to +0.8 V.

V

REF

U.V.L.O.

V

REF

U.V.L.O.

V

REF

V

REF

I

CHG

0.75 V

Latch

S
R

Q

4

I

DTC

CT

PWM

5

120 µA

8 mA

PWM

C

T

6

8 GND  Ground

0.75 V

7

8

5