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HA16666P/FP
600kHz PWM Controlled Switching Regulator
Description
The HA16666P/FP is a voltage mode PWM (pulse width modulation) control IC for switching regulator control. It can drive a power MOS FET efficiently on 600 kHz. Its stanby current is 0.3 mA (max), and it is used as the primary control power supply.
Functions
• • • • • • • • • +5 V reference voltage circuit Triangular waveform oscillator PWM comparator Output circuit (Totem pole output) Overcurrent protection circuit (with one-pulselatch mode) Undervoltage lockout protectoin circuit Soft start and quick shutdown function Remote control function Comparator with internal 1.3 V reference voltage
Features
• High-speed switching; tr = 80 ns (15 V amplitude) tf = 40 ns (15 V amplitude) • Low power dissipation; 0.3 mA max in standby state 12 mA max in operation state (V IN = 15 V) • Dual-slope highly accurate dead-band duty setup circuit; Setup accuracy Du = ±3% (max) • Wide output pulse width control range; 0 to 75%
HA16666P/FP
• Undervoltage lockout protection; VIN high threshold voltage 10 V typ VIN low threshold voltage 8 V typ • Two input threshold voltage for overcurrent protection cmparator; fixed voltage (1.3 V) variable voltage • Double pulse output protection by overcurrent protection circuit with one-pulse latch mode • Wide input supply voltage range; VCC = 11 to 40 V
Ordering Information
Type HA16666P HA16666FP Package DP-16 FP-16DA
2
HA16666P/FP
Pin Arrangement
E/I ST CT RT1 RT2 OSC Out GND N.C
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
N.INV + INV – CS Vref VIN RM OUT N.C
(Top View)
Pin Functions
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol E/I ST CT RT1 RT2 OSC Out GND N.C N.C OUT RM VIN Vref CS INV
– +
Descreption Error input Soft start Timing capacitance Timing resistor (rise section) Timing resistor (fall section) Triangular waveform oscillator Ground No connect No connect Pulse output Remote control Power supply voltage Reference voltage (5 V) output Comparator input (–) with reference voltage (1.3 V) Comparator input (–) for overcurrent protection Comparator input (+) for overcurrent protection
N.INV
3
HA16666P/FP
Block Diagram
E/I
1
+ + PWM comparator – S S/R Flip-flop Overcurrent detector
+
16
N.INV + INV –
ST
2
–
15
CT
3
R
– Comparator 14 + 13 Vref CS
RT1
4 Triangular waveform oscillator Reference voltage Undervoltage lockout protection
1.3 V 5V
RT2
5
12
VIN
OSC Out
6
11
RM
GND
7
Output driver
10
OUT
N.C
8
9
N.C
4
HA16666P/FP
Absolute Maximum Ratings (Ta = 25°C)
Rating Item Power supply voltage Output current (Push-pull) Error input OSC input voltage CS input voltage RM input voltage RT2 input current RT1 input current Power dissipation Operation temperature Storage temperature DC Peak Symbol VIN I O(DC) I O(peak) VEI VOSC VCS VRM I R2 I R1 PT Topr Tstg HA16666P +40 100 500*1 Vref VIN – 3VBE Vref VIN 1 1 680*
2
HA16666FP +40 100 500* Vref VIN – 3VBE Vref VIN 1 1 680*
3 1
Unit V mA mA V V V V mA mA mW °C °C
–20 to +85 –55 to +125
–20 to +85 –55 to +125
Notes: 1. Value at 300 ns of switiching time 2. Value at Ta ≤ 45°C. If Ta > 45°C, derated by 8.3 mW/°C 3. Value under the condition of 40 mm × 40 mm × 0.8 t ceramics board epoxy board
Electrical Characteristics (VIN = 15 V, Ta = 25°C, fosc = 300 kHz)
Item Voltage reference Output voltage Line regulation Load regulation Temperature stability Short circuit current Triangular waveform oscillator Maximum frequency Minimum frequency Frequency accuracy Voltage stability Temperature coefficient of frequency Symbol Vref Line Load VRTC I OS f max f min f der fT fi Min 4.75 — — — 10 600 — –10 — — Typ 5.00 50 9 +60 35 — — 0 1 2 Max 5.25 100 20 — — — 1 +10 — — Unit V mV mV Test Condition no load VIN = 11 to 40 V I O = 0 to 10 mA
ppm/°C no load mA kHz kHz % % % 11 V≤ VIN ≤ 40 V –20°C ≤ Ta ≤ +85°C Vref = 0 V CT = 150 pF CT = 0.15 µF
5
HA16666P/FP
Electrical Characteristics (VIN = 15 V, Ta = 25°C, fosc = 300 kHz) (cont)
Item PWM comparator Maximum duty cycle Input bias current Low-level threshold voltage High-level threshold voltage Dead-band duty accuracy Dead-band duty input voltage stability Temperature coefficient of dead-band duty Overcurrent detector Input bias current Common-mode input voltage range Input bias current Input threshold voltage Input voltage range Remote controller Input current to remote control pin Input high-voltage Input low-voltage Undervoltage lockout protector High-level threshold voltage Low-level threshold voltage Hysteresis width Output driver Output low-level Output high-level Output rise time Output fall time Total current Standby current Operation current Note: Symbol Du IB VOSCL VOSCH ∆ Du DT DuT I B1 VCM1 I B2 Vth VCS I RM VINH VINL VTHH VTHL Hys VL VH tr tf I CS I CL Min 75 –2 — — — — — –2 0 to VIN – 3 — 1.2 0 — 1 — 9 7 1.5 — VIN – 2.2 — — — — Typ — — 1.5 2.5 ±1 1 1 — — 5 1.3 — — — — 10 8 2.0 0.7 — 80 40 0.15 8 Max — — — — ±3 — — — — 13 1.4 Vref 1.5 — 0.4 11 9 2.8 1.4 — 150 100 0.3 12 Unit % µA.