JAJSM95A May   2023  – December 2023 DRV8845

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Operating Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Motor Configurations
      2. 7.3.2 Stepper Control Logic
      3. 7.3.3 DC Motor Control
      4. 7.3.4 PWM Current Control
      5. 7.3.5 Current Regulation and Decay Mode
      6. 7.3.6 Blanking Time
      7. 7.3.7 Charge Pump
      8. 7.3.8 Logic-Level Pin Diagram
      9. 7.3.9 Protection Circuits
        1. 7.3.9.1 VM Undervoltage Lockout (UVLO)
        2. 7.3.9.2 VCP Undervoltage Lockout (CPUV)
        3. 7.3.9.3 Overcurrent Protection (OCP)
        4. 7.3.9.4 Thermal Shutdown (OTSD)
        5. 7.3.9.5 Fault Condition Summary
    4. 7.4 Device Functional Modes
      1. 7.4.1 Sleep Mode (nSLEEP = 0)
      2. 7.4.2 Operating Mode (nSLEEP = 1)
      3. 7.4.3 nSLEEP Reset Pulse
      4. 7.4.4 Functional Modes Summary
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Application Schematics
    3. 8.3 Application Curves
  10. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Bulk Capacitance
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

6.5 Electrical Characteristics

Typical values are at TA = 25°C and VVM = 24 V. All limits are over recommended operating conditions, unless otherwise noted.
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
POWER SUPPLIES (VM)
IVMVM operating supply currentnSLEEP = 1, IOUT = 0 mA, outputs on, PWM = 50 kHz, DC = 50%

9

14

mA

nSLEEP = 1, Outputs off

3.5

4.5

mA

nSLEEP = 0

1.3

3

μA

tSLEEP

Sleep time

nSLEEP = 0 to sleep mode

120

μs

tRESET

nSLEEP reset pulse

nSLEEP low to clear fault

20

40

μs

tWAKE

Wake-up time

nSLEEP = 1 to output transition

0.62

0.8

ms

tONTurn-on timeVM > UVLO to output transition

0.62

0.8

ms

CHARGE PUMP (VCP, CP1, CP2)
VVCPVCP operating voltageVVM > 6 VVVM + 5V
f(VCP)Charge pump switching frequencyVVM > UVLO, nSLEEP = 1380kHz
LOGIC-LEVEL INPUTS
VILInput logic-low voltage

0

0.8

V
VIHInput logic-high voltage

2

5.5

V

VHYS

Input logic hysteresis

140

270

400

mV

IINL

Logic input low current

VIN = 0 V

-1

1

μA

IINHLogic input high currentVIN = 5 V

30

μA
tPDPropagation delayPWM change to source on

300

600

900

ns
PWM change to source off

150

700

ns

PWM change to sink on

300

600

900

ns

PWM change to sink off

150

700

ns

MOTOR DRIVER OUTPUTS
RDS(ONH)High-side FET on resistanceTJ = 25 °C, IO = -1. 2 A450550mΩ
TJ = 125 °C, IO = -1.2 A700850mΩ
TJ = 150 °C, IO = -1.2 A780950mΩ
RDS(ONL)Low-side FET on resistanceTJ = 25 °C, IO = 1.2 A450550mΩ
TJ = 125 °C, IO = 1.2 A700850mΩ
TJ = 150 °C, IO = 1.2 A780950mΩ

Vf

Body diode forward voltage

IO = ± 1.2 A

1.2

V

IDSS

Output Leakage

Outputs, VOUT = 0 to VM

-2

7

μA

tSROutput rise/fall timeVM = 24V, IO = 1.2 A, Between 10% and 90%100ns

tD

Dead time

90

425

600

ns

tBLANK

Current sense blanking time ((1))

1

μs

PWM CURRENT CONTROL (VREFx)
IVREFxVREFx pin reference input CurrentVREF = 1.5 V

-1

1

μA
tOFFPWM off-time

16

μs
ΔITRIPCurrent trip accuracy

VVREFx = 1.5 V, phase current = 100%

–2

2

%
VVREFx = 1.5 V, phase current = 67%–3

3

VVREFx = 1.5 V, phase current = 33%-7

7

PROTECTION CIRCUITS
VMUVLOVM UVLO

threshold

VM falling4.14.254.35V
VM rising4.24.344.45
VMUVLO,HYS

VM UVLO

hysteresis		Rising to falling threshold

90

mV
VCPUVCharge pump undervoltageVCP fallingVVM + 2V
IOCPOvercurrent protectionCurrent through any FET2.5A
tOCPOvercurrent deglitch time2.1μs
TOTSDThermal shutdownDie temperature TJ155165175°C
THYS_OTSDThermal shutdown hysteresisDie temperature TJ20°C
(1)

Guaranteed by design.